1. Find the total surface area $$(in cm^2)$$ of a cuboid of length, breadth and height of 10.5 cm, 8 cm and 9 cm respectively.
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By: anil on 05 May 2019 02.06 am
Length, $$l=10.5$$ cm, breadth, $$b=8$$ cm and height, $$h=9$$ cm Total surface area of cuboid = $$2(lb+bh+hl)$$ = $$2[(10.5 imes8)+(8 imes9)+(9 imes10.5)]$$ = $$2 imes(84+72+94.5)$$ = $$2 imes250.5=501$$ $$cm^2$$ => Ans - (D)
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