SOLUTION: Larry is building a cylindrical silo that must have a volume of 65m3. the height of the silo must be 6 meters, what is the radius? Just trying to figure this out. And I keep me

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Question 754249: Larry is building a cylindrical silo that must have a volume of 65m3. the height of the silo must be 6 meters, what is the radius?
Just trying to figure this out. And I keep messing up.

Thanks Jasmine
Found 2 solutions by Alan3354, rothauserc:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Larry is building a cylindrical silo that must have a volume of 65m3. the height of the silo must be 6 meters, what is the radius?
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Vol+=+pi%2Ar%5E2%2Ah
65+=+pi%2Ar%5E2%2A6
r%5E2+=+65%2F%286pi%29
r =~ 1.857 meters
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Are you my niece Jasmine?

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
Larry is building a cylindrical silo that must have a volume of 65m3. the height of the silo must be 6 meters, what is the radius?
formula for the volume of a cylinder is
V = pi*r^2*h
we have
65 = (22/7)*r^2*6 note that pi is represented by (22/7)
multiply both sides of = by 7
455 = 22 *r^2 *6
455 = 132 * r^2
divide both sides of the = by 132
r^2 = 455/132 and
r = sqrt(455/132) = 1.86 m