Question

The dimensions of a room are 4 m x 3 mx 7 m. Find the total surface area and area of the four walls and the roof.​

Answer 1

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The dimensions of room is 12×8×4

The Lateral surface area is 

2h(l+b)

2(4)(12+8)

8×20=160m2

Cost of white wash is 5m2

Total cost is 5×160=800Rs,

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I hope it will help you.

Answer 2

Answer:

Step-by-step explanation:

now the volume will be 84m.
Area of 1 side will be 12m shorter one then longer will be 21

33 x 2 = 66

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