The external dimensions of a closed wooden box are in the ratio 5:3:2.If the cost of the painting its outer surface at the rate of $0.5 per cm² is $496, find the dimensions of the box
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rate is $496, given that $0.5 per cm^2,so
$496/$0.5=992
TSA of wooden block is 992 cm^2.
as we know TSA of cuboid is 2( lb+ bh+ hl)
given dimensions in ratio 5:3:2
992=2 (5x ×3x. + 3x × 2x. +2x × 5x)
992=2× 31x
992=62x
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