Question

a square room is 15 feet long and 10 feet high find the cost of plastering its walls ceiling and floor at rs. 18per sq. ft.​

Answer 1

Step-by-step explanation:

Area of four walls of square room = 2(l+b)h

= 2×(15+15)×10

= 600

= 600 square feet

Cost of plastering of each

square feet

= 18 rupees

Cost of plastering of 600 square feet

= 18 rupees × 600

= 10800 rupees