SOLUTION: if the diameter is 200 ft. whatwill be the area of the surface?

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Question 77476: if the diameter is 200 ft. whatwill be the area of the surface?
Answer by aaaaaaaa(138) About Me  (Show Source):
You can put this solution on YOUR website!
I don't know if the approximate value of pi is given. If it is, substitute and multiply on the last equation; if it's not, the result I'll end up with is probably the intended one.
First of all, the formula for the area of a circle is
A+=+d%2Api
Therefore, the area of our circle is
A+=+200%2Api feet.