A hollow metal pipe has outer diameter and inner diameter

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A hollow metal pipe has outer diameter

6\,\text{cm}

and inner diameter

4\,\text{cm}

. Its length is

20\,\text{cm}

and its mass is

500\,\text{g}

. Calculate the density of the metal in

\text{g cm}^{-3}

. (a)

1.27\,\text{g cm}^{-3}

(b)

1.6\,\text{g cm}^{-3}

(c)

0.88\,\text{g cm}^{-3}

(d)

2.0\,\text{g cm}^{-3}