answersLogoWhite

0

Knowing that the formula to find the area of a circle is

* Ac = πr2 We must first find the radius of the circle with this formula:

* Rc = d/2 So dividing the diameter by two we get a radius of 20 feet.

* 20' = 40'/2 Now that the radius is found, we can plug it in and fine the exact answer needed:

* Ac = π(20ft)2 * Ac = π(400ft2) We find that the exact answer is 400πft2.

However if you want to calculate out the the value by multiplying out π the answer would change from 400πft2 to approximately 1256ft2. π = pi

π ≈ 3.14

User Avatar

Wiki User

16y ago

Still curious? Ask our experts.

Chat with our AI personalities

BlakeBlake
As your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
MaxineMaxine
I respect you enough to keep it real.
Chat with Maxine
RossRoss
Every question is just a happy little opportunity.
Chat with Ross

Add your answer:

Earn +20 pts
Q: What is the area of a circle if the diameter is 40 feet?
Write your answer...
Submit
Still have questions?
magnify glass
imp