Question

the walls and ceiling of a room 7 metre long, 5 m wide and and 3.5 m high are covered with paper 6 dm wide.Find the length of paper required, if no length less than a metre can be bought.​

Answer 1

Answer:

l = 7 m, b = 5 m and h = 3.5 m

Area of four walls = 2(l + b)h = 84 m2

Let the length of the paper be L.

L × 6/10 = 84

L = 140 m

Length of the paper required is 140 m.

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