How much metal sheet is required to make closed rectangle box of length 4.5 cm, breath 2.5 and height 0.5.
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Answer:
Surface area=2lb+2bh+2hl
=2(lb+bh+hl)
=2(4.5×2.5+2.5×0.5+0.5×4.5)
=2(11.25+1.25+2.25)
=2(14.75)
=29.5 cm²
Thus, 29.5 cm² of metal sheet is required to make rectangular box.
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