The volume of the wooden block is 315cm³. If it is 9 cm long and 7 cm wide. Find the height. *
4m
5m
6m
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Area of cuboid (room) =2bh+2hl
=(2×20)+(2×24)
=88m2
Area of paper =lb
=l×0.5m
=0.5lm2
Area of cuboid = Area of paper
88=0.5l⇒l=176m
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