Question

a cuboidal object of side 15 cm weighs 1.35kg. calculate its density in kg/m3

Answer 1

Hi Dear

Here is your answer
Length= 0.15 m

Calculate volume= a^3 = (0.15)^3= 3.3 × 10^-3 m3

Density= mass/volume

= 1.35/3.3×10^-3

= 0.2025 kg/m3

☆ Hope it helps☆

Answer 2

Mass (m) = 1.35 kg

Side (a) = 15 cm = 0.15 m

Volume of a cube = side x side x side = 0.153 =0.003375 cu. M

Density (ρ) = Mass (m) / Volume (V)

=> ρ = 1.35/0.003375

=> ρ = 400 Kg/m3