SOLUTION: I need help A.S.A.P like yesterday,I am having trouble with this geometry questions. What is the are in feet of a circular table cloth that has a diameter of 42 inches? A) 13

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Question 210243: I need help A.S.A.P like yesterday,I am having trouble with this geometry questions.
What is the are in feet of a circular table cloth that has a diameter of 42 inches?
A) 1385.44236 (pi symbol)square feet; B) 21 (pi symbol)square feet; C)3.0625 (pi symbol)square feet; D) 1.75 (pi symbol)square feet.

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
What is the area in feet of a circular table cloth that has a diameter of 42 inches?
:
We use the radius here: 42/2 = 21 inches
:
A = pi%2Ar%5E2
A = pi%2A21%5E2
A = 441%2Api sq/inches
:
There are 144 sq/in in 1 square ft
:
%28441%2Api%29%2F144 = 3.0625%2Api sq/ft
: