Question

Q.20) If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its
(1 marks)​

Answer 1

We can infer that the number 0.75 refers to the density of the liquid in kg/dm³.

Given:

The volume of a liquid weighing 3000 kg is 4 cubic meters.

To Find:

0.75 will be the value of which property.

Solution:

Here, we have,

Weight of the liquid (W) = 3000 kg

Here weight and mass are equal.

The volume of a cube (V) = 4 m³

or,

In decimeters, the volume will be 4 × 10³ dm³.

Now,

We know,

Density = Mass/Volume

i.e,

Here,

Density = W/V

= 3000/4000

= 0.75 kg/dm³

So, we can infer that the number 0.75 refers to the density of the liquid in kg/dm³.

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Answer 2

0.75 refers to the density of the liquid in kg/dm³.

Explanation:

The liquid's weight (W) is 3000 kg.

Mass and weight are equivalent here.

A cube's volume (V) equals $4m^{3}$.

Or, the volume will be $4$ × $10^{3}$ $dm^{3}$ in decimeters.

The formula of density -

Density = Mass / Volume

Here, density = W / V.

$= 3000 / 4000\\=0.75 kg/dm^{3}$

Therefore, 0.75 refers to the density of the liquid in kg/dm³.

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