Question

One side is 8 cm

1. A cubic block of granite shown in the figure has a density of 2.75 g/cm3. Find its mass.


A. 186.18 g

B. 176 g

C. 514.75 g

Answer 1

The mass of the cubic granite block is 1408 g .

Explanation:

Formula

Volume of a cube = a³

Where a is the side of the cube .

`Density = (Mass)/(Volume)`

As given

one side of the cube is 8 cm .

(The figure is shown below.)

Thus

Put in the formula

Volume of a cubic granite block = 8 × 8 × 8

= 512 cm³

As given

The density of cube is 2.75 g/cm³.

Put in the formula

`2.75 = (Mass)/(512)`

Mass = 2.75 × 512

Mass = 1408 g

Therefore the mass of the cubic granite block is 1408 g .