the dimensions of a room are (12.5m x 9m x 7m).It has 2 doors,each of dimensions (1.5m x 1m).Find the cost of painting the walls at $ 15 per square
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Answer:
area of two doors =1.5m*2×2
=3.0m*2
area of room =2(lb+bh+hl)
=2(12.5×9+9×7+7×12.5)m*2
2(112.5+63+87.5)
2×263
526
area required for painting =526-3
=523
cost at dollar 15=523×1101.68
= dollar 576178.64
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