Find the formula for the area A and the perimeter P of the shape shown find the area and perimeter when R is 5 cm find R when A is 100cm2 find r when P is 50cm find the value of r that makes A = p numerically

Find The Formula For The Area A And The Perimeter P Of The Shape Shown Find The Area And Perimeter When

Answers

Answer 1

Answer:

1)Area; A = ¼πr²

Perimeter; P = πr/2 + 2r

2)A = 19.63 cm²

P = 17.85 cm

3) r = 8.885 cm

4) r = 14 cm

Step-by-step explanation:

This is a quadrant of a circle. Thus;

Area of a circle is πr². A quadrant is a quarter of a circle. Thus;

Formula for Quadrant Area is; A = ¼πr²

A) Perimeter of a circle is 2πr. Thus, perimeter of a quadrant is a quarter of the full circle perimeter.

Formula for the quadrant perimeter in the image given is;

P = 2πr/4 + 2r

P = πr/2 + 2r

B) When r is 5 cm;

A = ¼π(5)²

A = 19.63 cm²

P = π(5)/2 + 2(5)

P = 17.85 cm

C) when A is 100cm²:

¼πr² = 100

r² = 100 × 4/π

r² = 78.9358

r = √78.9358

r = 8.885 cm

D) when P = 50 cm.

50 = πr/2 + 2r

50 = (½π + 2)r

r = 50/(½π + 2)

r = 14 cm


Related Questions

Michael needs to memorize words on a vocabulary list for German class. He has 12 words to memorize,and he is one-fourth done. How many words has Michael memorized so far?

Answers

Answer:

3

Step-by-step explanation:

12 divided by 4 equals 3

Hope this helped!! :)

Brainliest?!?!



Can someone tell me what the slope is ?

Answers

Answer:

-5/4

Step-by-step explanation:

rise/run = -5/4

hope this helps <3

Answer:

-5/4

calculator lol (and rise over one)

PLEASE ANSWER THIS! THANKS! :D

Answers

€31.65 is the answer to your question

Answer:

38 euros

Step-by-step explanation:

ok, so,

you know that

£3 is equal to 4 euros

this means that    0.75 pound is equal to 1 euro

       28.50/0.75=38

do 38 times 1, which means that it is 38 euros

please mark me as brainliest!!!<3

7th grade math please help

Answers

Answer:

3.8 x 4.5

+

3.8 x 5.1 divided by 2!

Step-by-step explanation:

You can turn it into 2 squares, or follow the hints!

last one i need help with

Answers

Answer: 10 sq units

Step-by-step explanation:

3 + 4.5 + 0.5 + 2 = 10 sq units

PLEASE HELP ME I WILL GIVE YOU BRAINIEST

Answers

Answer:

2.68 × [tex]10^{26}[/tex] Km³

Step-by-step explanation:

Using the given formula for volume V, then

V = [tex]\frac{4}{3}[/tex] π × (4 × [tex]10^{8}[/tex] )³

  = [tex]\frac{4}{3}[/tex] π × 4³ × ([tex]10^{8}[/tex] )³

 = [tex]\frac{4}{3}[/tex] π × 64 × [tex]10^{24}[/tex]

 = 268 × [tex]10^{24}[/tex]

 = 2.68 × 10² × [tex]10^{24}[/tex]

 = 2.68 × [tex]10^{26}[/tex] Km³

pleaze help
Plot the ordered pair in a coordinate plane. Describe the location of the point. 32. A(1,3)
33. B(0, -3)
34. C(-4,-2)
35. D(-1 1/4, 2)
and explain it if u can

Answers

Answer:

Well, there are 4 quadratic spots on the graph. A(1,3) would be in the top right. B(0,-3) would be on the line on the bottom half of the graph. C(-4,-2) would be in the left bottom half of the graph. and D(-11/4,2) would be in the top right. Connect the dots and just say the shape it makes.

Step-by-step explanation:

Please can someone answer this question quickly please

Thanks

Answers

Answer:

C. 5/7

Step-by-step explanation:

Answer:

It is C.5/7

Step-by-step explanation:

Hope this helped have an amazing day!

 what number when added to 1 1/3 gives 2

Answers

The answer is 2/3

Explanation

1/3+2/3= 3/3 which is 1
So that would change 1 1/3 to 1 3/3 which is the same as 2.

A square has a perimeter of 8x - 10 units, Each side is x units long. What is the value of x?

Answers

Answer:

They want you to recognize that you can make 2 equations that both are equal to P.... the perimeter.... and then set them equal to each other and solve for x  .. as below

Step-by-step explanation:

P = 8x-10

P = 4x

4x = 8x-10

10 = 4x

2.5 = x

50 points and a Brainliest.

Answers

Answer:

1a. 64=4(7+x)

1b. x=9

2a. 64=7+4x

2b. x=57/4

Step-by-step explanation:

1a. To represent this situation, all of the weight for each package must be in the equation. Since each package has 4 boxes, and only the objects in one box are detailed, everything must be multiplied by 4. Now, the values that must be multiplied by 4 are a bag of rice and beans. Since the beans weigh 7 pounds, they can be represented using the constant 7, and the rice can be represented with the variable x. Combining all of this information, the equation 64(total)=4(7+x)

1b. Now, the equation above must be solved. First, divide both sides by 4 in order to get 16=7+x. Now, subtract 7 from both sides to find that x=9

2a. This problem is similar to the first problem, except instead of multiplying both the beans and rice by four, only the rice needs to be multiplied. With this knowledge the equation 64=7+4x is created.

2b. To solve the above equation, 7 must be subtracted from both sides. This leaves 57=4x. Now, both sides must be divided by 4, giving the final answer of x=57/4.

Answer:

1a. 64=4(7+x)

1b. x=9

2a. 64=7+4x

2b. x=57/4

Step-by-step explanation:

Which two numbers multiply to 20 and add to 9

Answers

Answer: 5x4=20

And 5+4=9

Step-by-step explanation:

The required two numbers are 4 and 5.

What is equation?

"It is a statement which consists of equal symbol between two mathematical expressions."

For given example,

We need to find two number such that if multiply then we get 20 and add to get 9.

Let 'a' and 'b' be two numbers.

According to given conditions,

a × b = 20                .........................(i)

a + b =9                    .......................(ii)

So, from given conditions we have two equations (i) and (ii).

From equation (ii) we have,

a = 9 - b                    ...............(iii)

Substitute above value of 'a' in equation (i),

⇒ (9 - b) × b = 20

⇒ 9b - b² = 20

⇒ b² - 9b + 20 = 0

Now we solve this quadratic equation to find b.

⇒ b² - 9b + 20 = 0

⇒ b² - 5b - 4b + 20 = 0

⇒ (b - 5) (b - 4) = 0

⇒ b = 5 or   b = 4

Find the value of 'a' from equation (iii)

When b = 5

⇒ a = 9 - 5

⇒ a = 4

When b = 4

⇒ a = 9 - 4

⇒ a = 5

Therefore, the required two numbers are 4 and 5.

Learn more about equation here:

https://brainly.com/question/13170101

#SPJ2

30pts PLEASE HELP I WILL GIVE BRAINLIEST TO RIGHT ANSWER

The distance of a golf ball from the hole can be represented by the right side of a parabola
with vertex (-1,8). The ball reaches the hole 1 second after it is hit, at time 0.

What is the equation of the parabola, in vertex form, that represents the ball's distance
from the hole, y, at time x?

Answers

Let's suppose that the hole is at y = 0m, where x is the time variable.

we know that:

The vertex is (-1s, 8m).

(i suppose x in seconds and y in meters)

At x = 1s, the ball reaches the hole, so we also have the point:

(1s, 0m).

Remember that the vertex of a quadratic equation y = a*x^2 + b*x + c is at:

x = -b/2a,

then we have:

-1 = -b/2a.

Then we have tree equations:

8m = a*(-1s)^2 + b*-1s + c

0m = a*(1s)^2 + b*1s + c

-1s = -b/2a.

First we should isolate one variable in the third equation, and then replace it in one of the other two:

1s*2a = b.

So we can replace b in the first two equations bi 1s*2a.

8m = a*1s^2 - 1s*2a*1s + c

0m = a*1s^2 + 1s*2a*1s + c

We can simplify both equations and get:

8m = a*( 1s^2 - 2s^2) + c = -a*1s^2 + c.

0m = a*(1s^2 + 2s^2) + c = a*3s^2 + c.

Easily we can isolate c in the second equation and then replace it into the first equation:

c = -a*3s^2

The first equation becomes:

8m = -a*1s^2 - a*3s^2 = -a*4s^2

a = 8m/-4s^2 = -2m/s^2.

Now with a, we can find the values of c and b.

c = -a*3s^2 = -(-2m/s^2)*3s^2 = 6m.

b = 1s*2a = 1s*(-2m/s^2) = -2m/s.

Then the equation is:

y = (-2m/s^2)*t^2 + (-2m/s)*t + 6m

Is (-1,2) a solution to the following linear equation:
2x + y = 2

Answers

Plug in the values
2(-1) + 2 = 2
-2 + 2 = 2
0 = 2, false

(-1,2) is not a solution

Answer:

No

Step-by-step explanation:

plug in the variables into the equation

(x,y)

(-1,2)

2(-1)+2=2

2*-1=-2

-2+2=0

2 does not equal 0 so therefore no, it is not a solution

There were 4983 students going on the field trip. Each bus could hold 60 students. How many buses did they need to transport all of the students?

Answers

Answer:

eighty four 84 84 84 84 84

Answer:

84

Step-by-step explanation:

What is the solution to this inequality?

42.06 = 21.33 + 3x

Answers

Answer:

x = 6.91 hope this helps pls lmk

help pls, i’ll mark as brainliest if correct

Answers

Answer: -11/12

Step-by-step explanation:

For her science project, Sylvia collected flowers and measured their length. The line plot displays the lengths of the flowers. If
the flowers were laid end to end, what is the total length of all the flowers?
Length of Flowers
Number
of Flowers
OA. 5 feet
OB. 5 feet
OC. 54 feet
OD. 58 feet

Answers

Answer:

5 3/4

Step-by-step explanation:

I have this problem too and in the same website too. It told us the total length of all of the flowers, so we add 1/8 + 1/4 + 3/8 + 3/8 + 3/8 + 3/8 + 1/2 + 1/2 + 5/8 + 5/8 + 3/4 + 7/8 and it was equal to 5 3/4

Answer: the answer is 5 3/4

Step-by-step explanation: i took the quiz

Can u help me please

Answers

I'll help

The sum of the prices for the items(That's 2large baskets and small gift baskets) for the first customer is $57. So assuming the price of a large basket is x and small basket is y, then an expression for the first sentence is;

2x + 5y= 57

The sum of the prices for the second customer is $6 less than the first customer ( that's 57-6 which is $51). Since he bought 1 large basket and 10 small baskets and the price of each large basket is the same and the price of each small basket is the same they assume the same variable of x and y. So the expression of the second sentence is;

x+10y=51.

So the expressions will be;

2x+5y=57

x+10y=51

That's Option C

What expression is equivalent to 11x-6x+x

Answers

Answer:

6 x

Step-by-step explanation:

The picture below has the steps

I NEED HELP PLEAZE!!!!!!!!!!!!!!!! =(

Answers

Answer:

x[tex]\sqrt{6y}[/tex]/ 3[tex]y^{2}[/tex]

Step-by-step explanation:

Find the values or a and b​

Answers

Answer:

a=33 ( vertically opposite angles)

a+90=b( sum of opposite interior angle is equal exterior angle)

33+90 = b

b=123

What is 60 percent of 20

Answers

The 60 percent of 20 is 12

Answer:

The answer is 12. Hope this helped :-)

Step-by-step explanation:

60% of 20

6.2=12

SOME ONE HELP PLS Jenny has finished 15 of the 20 lessons in her piano book. Liam has finished the same percent of lessons from his piano book. His book contains 40 lessons. How many lessons has Liam finished?

Answers

Answer:

30

Step-by-step explanation:

15/20 is 75%

75% of 40 is 30

You have a goal to save $250. You have saved $160? What percent of your goal have you reached?

Answers

The answer is 64 percent

-5x+35=40

It's 2-step-equations btw :)

Answers

Answer:

x = - 1

Step-by-step explanation:

Given

- 5x + 35 = 40 ( subtract 35 from both sides )

- 5x = 5 ( divide both sides by - 5 )

x = - 1

17 - 4x = 33
What does X=?

Answers

Answer:

x = -4

Step-by-step explanation:

17 - 4x = 33

Subtract 17 from each side

17-17 - 4x = 33-17

-4x = 16

Divide each side by -4

-4x/-4 =16/-4

x = -4

For homework, a teacher instructs her students to choose a county in their state for a social
studies project. Since they live in a small state, repeats are allowed.
Are these two events dependent or independent?

Answers

Answer:

they are dependent

Step-by-step explanation:


Can someone pleaseeee help if you’re correct I’ll give u brain list

Answers

Answer:

45 degrees / 2 miles

Step-by-step explanation:

All the sides are equivalent, therefore each side has the same value.

Hopefully this helped you make sure to make it brainliest! :D

Answer:

Step-by-step explanation:

2√2

help me with this please.

Answers

Answer: i know this already is late but ,8 13 18 just adding 5

Step-by-step explanation:

Other Questions
6(7 + x) + 5x ???? Help me 2. Why do you need to chew the food well? why do you need to chew the food well One-third of Olivia age , increased by 12 , is equal to twice her age , decrease by 3. How old is Olivia . Choose an animal pair from either photograph in picture 1.1. Wherewould you place that pair in the chart: under mutualism, commensalisms,or parasitism? Explain true or false. Water scarcity in the Southwest is caused by climatic issues. 6/n = 9/24 n=? I need help, please show steps..... An isotope of platinum has 100 neutrons. What is the atomic number of this specific isotope of platinum?100, 98, 195, 198 COME HELP ME HERE ONLY IF YOU KNOW THE ANSWER. At the end of "The Gift of the Magi," Jim says that he and Della should forget their gifts for a while and eat supper. This suggests the theme that love isunderstanding.romantic.easily lost.being together. Question 4 of 5Which fraction is equal to 45%?A.4.5100OB.1004545100 D.100450SUBMIT I WILL GIVE BRAINLIEST AND POINTS HELP PLEASE Can someone please help me out!!? Helppp me faststttttt plzzzzz You need to lower your debt to credit limit ratio by $1,000. Your current limit is $1,400. $1,000 is what percent of your credit limit? Which of these is equal to 4 ()4 A.()4 B.()4 .()4 D. ()4 PLEASE ANSWER.Purple is dominant to white. A flower with the alleles PP (purple) iscrossed with a flower with alleles pp (white). What is the percent chancethat their offspring (babies) will be purple? 0%50%100% What did Marcus Garvey advocate for blacks? A. agreement that blacks should accept an inferior social positionB. education for blacks at major universitiesC. improvement of separate but equal facilities for both blacks and whitesD. black-owned businesses and separation from whites Why is Queen Victoria called Europes grandmother? Which of the following are solutions to the equation below?Check all that apply.6x2 - 2x + 36 = 5x2 + 10xO A. 18O B. -3O C. 4OD. -6E-4 F. 6 Which number below best represents a depth of seven hundred and five-tenths meters below the ground?A. -700 5/100B. -700 5/10C. 700 5/10D. 700 5/100 What is the density of an object with a mass of 125 g and a volume of 150 mL ?