Question

Calculate the volume of a wooden object
of mass 280 kg, if density of wooden is
800 kg/m3​

Answer 1

Answer:

0.36M³ is the answer

I hope it helps!

Answer 2

Given :

• Mass of the wooden object = 280 kg

• Density of the wooden object = 800 kg/m³

To find :

• Volume of the wooden object

Solution :

★ Volume of an object is the space occupied by it. The commonly used units for volume are cm³, m³. Following is the formula to calculate volume of an object when density and mass of the object is given :

$\boxed{\bold{Volume = \dfrac{D}{m}}}$

where,

• D denotes the density of the object

• m denotes the mass of the object

we have,

• D = 800 kg/m³
• m = 280 kg

Substituting the given values :-

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object = \dfrac{800}{280}$

Cancelling the zeros :-

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object = \dfrac{80\!\!\!\not0}{28\!\!\!\not0}$

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object = \dfrac{80}{28}$

Cancelling by 2 :-

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object = \cancel\dfrac{80}{28}$

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object = \cancel\dfrac{40}{14}$

Again cancelling by 2 :-

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object = \dfrac{20}{7}$

$\\ \longrightarrow \quad \sf Volume \: of \: the \: object =2.85$

Therefore, the volume of the wooden object = 20/7 m³ or 2.85 m³