Question

The internal measure of a cuboidal room are 12m*8m*4 m find the total cost of painting all four walls of room if the cost of painting is rupees 50 per metre square what will be the cost of painting ceiling of the room is also painted

Answer 1

for all four sides

Lateral surface area of cuboid=2(l+b)h
2(12+8)4
2(20)4
2*80
160 m square
160 * 50
8500rs