Posted by **jenna ** on Monday, July 4, 2011 at 4:00pm.

what is the exact area of a circle with a diameter of 15 inches?

- math -
**Damon**, Monday, July 4, 2011 at 4:01pm
radius = 15/2

area = pi r^2 = pi (225/4)

- math -
**jenna **, Monday, July 4, 2011 at 4:09pm
so its 225pi sq. in?

- math -
**bobpursley**, Monday, July 4, 2011 at 4:42pm
exact? One cannot write down *exactly* irrational numbers, such as PI.

The exact answer is 225/4 * PI

- math -
**Damon**, Monday, July 4, 2011 at 5:01pm
pi r^2 = pi D^2/4 = area of circle

## Answer This Question

## Related Questions

- summer math hw - one circle has a diameter of 10 inches. a second circle has a ...
- geometry - What is the exact area of a circle with a diameter of 25 inches?
- math - If the number of square inches in the area of a circle is equal to the ...
- math - If the number of square inches in the area of a circle is equal to the ...
- math - If the number of square inches in the area of a circle is equal to the ...
- Math - What is the exact circumference of a circle with a diameter of 21 inches...
- math - what is the exact circumference of a circle with a diameter of 13 inches?
- geometry- need help - Claim: the lateral (side ) surface of any area of any ...
- Math - A bakery charges $0.10 for a cookie that is 2 inches in diameter. If the ...
- math - A bakery charges ten cents for a cookie that is 2 inches in diameter. If ...

More Related Questions