Max wants to design a right cylindrical container with volume 90 in3. The height has to be 3.5 times the radius. What is the radius of the cylinder? (round to the nearest tenth)

Answer 1

volume = πr²h = 90in³. Also we are given that h=3.5r

so 90 = πr²(3.5r)

r³= 90/π3.5

r = 2.015. To the nearest tenth is 2