Question

The dimensions of a wooden block are 2m x 0.25 m x 0.10 m. If the relative density of wood is 0.6, calculate the mass of block in kilograms.

• A. 30 kg
• B. 38 kg
• C. 10 kg
• D. 22 kg

Answer 1

The correct option is A

30 kg

Volume of block = 2 x 0.25 x 0.10 = 0.05 m³

Relative density = 0.6

Density of wood = Relative density x density of water

0.6 x 1000 kg m^-3 = 600 kg m^-3

Maas of the block = volume x density

=0.05 x 600 kg m^-3

= 30 kg