Question

A roof of dimensions 6.5 m ×5.5 mis covered on all sides by a 1 m high wall of width 30 cm. The remaining part of the roof is covered with a waterproof covering at 9 rs. Per m2 . Find the total cost of waterproofing

Answer 1

$(6.5 \times 5.5 ) - (0.3 \times 6.5) = 33.8 \\ 33.8 \times 9 = ruppes \: 304.2$

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