Question

The outer surface of a cube of side 6cm is to be painted. If the cost of painting is rupees2 per 100sq cm.find the total cost of painting the cube.

Answer 1

Heya,

Given:-
Side = 6cm
Cost of painting = Rs.2/100cm^2

Let's take side as "a"

Therefore,

CSA = 4a^2

CSA = 4 (6)^2

CSA = 4 × 36

CSA = 144cm^2

To find the total cost of painting,

Total cost of painting the outer surface of cube= CSA × 2

Total cost of painting the outer surface of cube= 144 × 2

Total cost of painting the outer surface of cube= Rs.288

Hope my answer helps you :)

Regards,
Shobana