A cylinder has a height of 7 centimeters. Its volume is 3,165.12 cubic centimeters. What is the radius of the cylinder?

Answer 1

V= hpi(r)^2 h= 7 cm

V = 31.6512 cm^3

pi(r)^2 = 31.6512/7

r^2 = 31.6512/7(3.14159)

r = square root of 31.6512/7(3.14159) = about sqr1.4393 cm = 1.1997 cm = the radius of the cylinder with height 7 and volume = 31.6512

radius = about 1.2 cm

V= 7pi(1.2)^2 = pi = about 10.08(3.14) = 31.6512