Question

7. If the dimensions of a room are 10 m X 12 m X 9 m, then find
the cost of painting its four walls at the rate of Rs. 10 per
square metre.
Rs. 3900
ООО
Rs. 636
Rs. 3960
Rs. 6000​

Answer 1

Answer:

₹ 3960

Step-by-step explanation:

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

2 X ( 10 + 12 ) X 9 = 2 X 22 X 9 = 396 m^2

cost of painting = 396 X 10 = ₹ 3960