Question

The cost of the painting the total surface area of a cube at the rate of 30 paise per cm square is Rs 1036.80. The volume of the cube is

Answer 1

Total surface area of a cube = 6a^2

TSA = 103680 paise / 30 paise
= 3456 cm sq

Now
6a^2 = 3456 cm sq
a sq = 3456/6
a = under root 576
a= 24

Side of cube is 24
Volume = a^3
V = 24*24*24= 13824 cm cube