Question

Length breadth and height of a room are 5 M 4 m and 3 M respectively find the cost of whitewashing the Wall of the room and ceiling at the rate of 7.50 per metre square

Answer 1

I hope this help you......area of room =area of 4 walls +area of celeing.....answer is 555

Answer 2

Area of 4 walls of room = 2h(l+b)
= 2×3(5+4)
= 54 sq. m
Area of ceiling = l×b
= 5×4 = 20 sq. m
Area of whitewashing = 54+20=74sq.m
Cost of whitewashing = 7.50×74 = Rs. 555
PLEASE MARK IT AS BRAINLIEST.