Question

A block of wood is 90 cm long, 15 cm wide and has thickness
20cm. Find the density of if its mass is 3 kg

Answer 1

Explanation:

We know that

Density= mass/ volume

Mass is 3Kg

Volume is

$Volume \: \: is = l \times w \times t \\ = .9 \times .15 \times .2 \\ = .027 \: {m}^{3}$

Density is

$= \frac{3}{.027} = 111.11 \: kg {m}^{ - 3}$