1. A restaurant hall is 20 metre long, 15 metre wide and 10 metre high. The interior of
the hall except the ceiling and the base has to be covered with a bright wall paper.
What will be the total expenditure if the wall paper costs Rs. 60 per square metre?
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Step-by-step explanation:
Dimensions of the hall as given are = length x breadth x Height = 20×15× 10
Total cost = cost per sq. meter * Surface area of the walls in sq. m
= 60(LH + BH + LH+ BH) = 60 (2LH + 2BH)
= 60*2*H(L + B) = 120 * H(L + B)
= 120 * 10 * (20 + 15) = 1200*35 = 42000
Therefore, total cost is ₹42000.00
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