SOLUTION: I HAVE AN 18" DIAMETER ROUND HOLE THAT IS 5 FEET DEEP . HOW DO I FIGURE CUBIC FEET OF VOLUME ?

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Question 361982: I HAVE AN 18" DIAMETER ROUND HOLE THAT IS 5 FEET DEEP . HOW DO I FIGURE CUBIC FEET OF VOLUME ?
Found 2 solutions by JBarnum, ewatrrr:
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
volume of a cylinder
V=%28pi%29r%5E2h
r=(1/2)d
d=18
r=9 inches
h=5*12=60 inches
V=%28pi%299%5E2%2860%29
V=4860%28pi%29inches
V=15260.4%2F12=1271.7 feet

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

V+=pi%2Ar%5E2h

r = 9" Or 9/12ft = 3/4ft Or .75ft , h = 5'

V+=pi%2A%28.75%29%5E2%2A5

using pi+=+3.14& your calculator will make short work of finding V in ft^3