Two solid cylinders are made of the same uniform material

MATHEMATICS · Single correct · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes

Problem

Two solid cylinders are made of the same uniform material. Cylinder A has radius

r

and height

h

. Cylinder B has twice the radius

(2r)

and half the height

(\tfrac{1}{2}h)

. Which of the following gives the ratio of their masses

m_B/m_A

? (a)

4

(b)

1

(c)

2

(d)

8