57. The cost of the paint is Rs. 36.50 per kg. If 1 kg of paint covers 16 squares feet, how much will it cost to paint outside of a cube having 8 feet each side?
A. Rs. 692 B. Rs. 768
C. Rs. 876 D. Rs. 972
Answer:
Surface area of the cube = (6 ×82)sq.ft
= 384 sq.ft.
Quantity of paint required = (384 / 16)kg
‹=›24 kg.
Cost of painting = Rs.(36.50 ×24)
= Rs. 876.
