This oblique cylinder has a volume of 90\pi\text{ m}^390π m
3
90, pi, start text, space, m, end text, cubed and a base area of 12\pi\text{ m}^212π m
2
12, pi, start text, space, m, end text, squared.
formula for volume it's given that the base are is 12 pi so that means your radius is solved for you. V = 90 so just divide 90 pi with 12 pi so you would get 7.5
