All categories

3 years ago

Find the area of a circle whose circumference measures 28 centimeters.

Mathematics

2 answers:

prohojiy [21]3 years ago

8 0

Answer:

Area of circle = 62.459624 square cm .

Step-by-step explanation:

Given: circumference measures 28 centimeters.

To find : Find the area of a circle .

Solution : We have given

circumference =28 cm

circumference = 2 *pi * radius .

Plug the value of circumference = 28 cm , pi = 3.14

28 cm = 2 * 3.14 * radius .

28 = 6.28 * radius.

On dividing both sides by 6. 28

Radius = 4. 46 cm

Area of circle = pi (radius )².

Area of circle = 3.14 ( 4.46)².

Area of circle = 62.459624 square cm .

Therefore, Area of circle = 62.459624 square cm .

vagabundo [1.1K]3 years ago

7 0

Assume the radius is R.

2*pi*R = 28 -> R = 14/pi

So the area will be pi*R^2 = 196/pi

You might be interested in

wendy is logging the number of video game levels she wins per hour. she has determined the function to be f(x) = 6x + 9, where x

True [87]

Since we are talking about real quantities (hours), x should be positive. Also, you need to take into account that Wendy needs to play in order to win game levels.
Therefore the domain will be: x > 0

5 0

3 years ago

Find the value of 5x - 2y+ 3z when x = 7 , y = 11 and z = -1

Oksanka [162]

By replacing you get:

5*7-2*11+3*(-1) = 35-22-3= 10

so the answer is 10.

If you like my answers, feel free to follow me and ask me more maths problems. :)

7 0

3 years ago

Read 2 more answers

The ______ average ignores compounding.

mars1129 [50]

The answer is: [B]: "arithmetic" .
______________________________________________________
"The <u> arithmetic </u> average ignores compounding."
______________________________________________________

8 0

3 years ago

One third plus one half

LekaFEV [45]

<h2><em>Find the LCD of 1/3 and 1/2.</em></h2><h2><em>The LCD is 6.</em></h2><h2><em>1/3 in 6ths is 2/6.</em></h2><h2><em>1/2 in 6ths is 3/6.</em></h2><h2><em>2/6 + 3/6 = 5/6.</em></h2><h2><em>1/3 + 1/2 = 5/6.</em></h2><h2><em>Hope this helps and have a nice day.</em></h2>

6 0

3 years ago

Read 2 more answers

Fifty people were surveyed about their favorite flavor of frozen yogurt. The results of the survey are displayed in the circle g

Ksju [112]

The answer is 2. This is because 2 = 4% of 50.

You can think of it like this:

4 is 4% of 100.

50 is half of 100.

Therefore, 4% of 50 is HALF of 4% of 100.

4 divided by 2 = 2

4 0

3 years ago