Question

A steel cube has sides of length 20cm. Calculate its mass. (Density of steel = 7.7
g/cm 3 ). Give your answer in g, and in kg.

Answer 1

Answer:

61600 g or 61.6 Kg

Explanation:

Given a cube made of steel.

Length of each side = 20 cm

Therefore, we get,

=> Volume = (20)^3 cubic cm

Now, it's given that,

Density of steel = 7.7 g/cm^3

To find the mass of steel cube.

We know that,

Density = Mass/Volume

Therefore, we will get,

=> Mass = Density × Volume

Let the mass be m.

Substituting the values, we get,

=> m = (7.7 × 20× 20 × 20) g

=> m = (7.7 × 8 × 1000) g

=> m = (61.6 × 1000) g

=> m = 61600 g

=> m = 61.6 Kg

Hence, the required mass of steel cube in g and Kg units are 61600 g and 61.6 Kg respectively.