Approximately how many cubic feet of water are needed to fill a circular swimming pool that is 80 feet across and 10 feet deep? Answers:
A) 10000
B) 50000
C) 80000
D) 85000
E) 90000
Answer Should be B.   V= \pir^2h= \pi*40^2*10= approximately 50000
<result>B</result>
Approximately how many cubic feet of water are needed to fill a circular swimming pool that is 80 feet across and 10 feet deep?