Approximately how many cubic feet of water are needed to fill a circular swimming pool that is 60 feet across and 6 feet deep?	Choose the most appropriate option
A) 900	B) 4000	C) 10000	D) 17000	E) 25000
Answer Should be D.   V= \pir^2h= \pi*30^2*6= approximately 17000
<result>D</result>
Approximately how many cubic feet of water are needed to fill a circular swimming pool that is 60 feet across and 6 feet deep?