# math

posted by .

i don't get this circle a has a diameternof 10 feet. rounded to the tenths place, the are of circle a is what?

• math -

Here's the formula for the area of a circle:

A = pi * radius squared

A = 3.14 * 5^2
A = 3.14 * 25
A = 78.5 square feet

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### maths

O is the centre of the circle and A and B are points on the circumference of the circle. The radians of the circle is 12 cm and the angle AOB is 54 degrees. Choose the one option which gives the length of the circle joining A and B …
2. ### 5th grade

Cindy has two fourths of a circle and three tenths of a circle. What does she need to make a whole circle?
3. ### Math

Cindy has two fourths of a circle and three tenths of a circle. What does she need to make a whole circle?
4. ### 8th grade math

circle A has a raduis that is twice the length og the raduis of circle B. Which is an accurate statement about the relationship of these areas of circle A and B and y?
5. ### math

two fourths of a circle plus two tenths of a circle is what decimal part of a whole circle?
6. ### Math

I have a question my brother asked me but I need a math expert. You have two interlocking circles and the radius of circle B goes through the center of circle A and of course the radius of circle A goes through the center of circle …
7. ### Math

The area of a circle is found with the formula A= 3.14r2 where 3.14 represents 3.14. If a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet what is the approximate radius of the …
8. ### Math

A shaded circle has a diameter of 12 feet. Within the circle, is another white circle with a radius of 2 feet. What is the area of the shaded circle.
9. ### Geometry

If 1/3 of a circle with a radius of 6 is shaded, what is the area of the shaded portion of the circle?
10. ### Geometry

A circle with center O has a radius of 4 feet. Points A and B are placed on the circle so that . Find the length of the intercepted . Use 3.14 for , and round your answer to the nearest tenth. A. 1.1 feet B. 1.2 feet C. 1.4 feet D. …

More Similar Questions