1. A classroom is 7m long 6m wide and 4m high. Find the cost of whitewashing THE INTERIOR WALLS and THE CEILING if the cost/m2 is Rs. 7.25. (Give ALL reasons)
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is the and is 1058.5?
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L=7m
B=6m
H=4m
Therefore, area of 4 wall +area of ceiling = total area of white washing
(2lb+2bh) + lh
=2×7×6+2×6×4+7×4×
=84+48+28
=160m^2
Total cost of white washing = 7.25*160
= RS 1160
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