Question

A cubical object of side 15 cm weighs 1.35 kg. Calculate its density in kilogram per cubic metre......I.​

Answer 1

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Answer 2

Given :-

• Mass (m) = 1.35 kg

• Side (a) = 15 cm = 0.15 m

To Find :-

• Density = ?

Calculation :-

We know that,

• Volume of a Cube = a x a x a = ${a}^{3}$ = $0.003375 {m}^{3}$
• Density = Mass / Volume

=> ρ = 1.35 / 0.003375

=> ρ = 400 kg/m^3.

Therefore, density in kilogram per cubic metre is 400 kg/m^3.

Formulas Used :-

• Volume of a Cube = a x a x a = ${a}^{3}$ = $0.003375 {m}^{3}$
• Density = Mass / Volume

What is Density ?

• Density is the physical property of matter.
• Mass per unit volume is known as density.
• Density is also known as volumetric mass density.
• Density is represented by ρ.