Math, asked by hydrapotter754, 5 months ago

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

Answers

Answered by aditya129456

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

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