The volume of a cylinder is given by formula V= pi(3.14) r^2h where r is base radius and h is height

Question

a) the height of a cylinder of radius 5cm and volume 500. Cm^3

B) radius of base of a cylinder of volume 300 cm^3 and height 10 cm
Our teacher didn't really start explaining this but wants us to try ourselves, i wAnt to have an idea about these

Answer 1

V = π r^2 h

a) you are given V = 500 , r = 5 ,so you are missing the h
just plug in the values

500 = π (25) h
divide both sides by 25π
500/(25π) = h
h = 20/π or appr 6.37 ( if you use 3.14 or π)

in B , you are missing the value of r
π r^2 (10) = 300
divide by 10
πr^2 = 30
divide by π
r^2 = 30/π
take square root of both sides

r = √(30/π)

you do the button-pushing.

Answer 2

The radius of a cylindrical construction pipe is 2 feet the pipe is 16 feet long what is the volume use the value 3.144 PI and round your answer to the nearest whole number