15 cm long to 1.25 m wide and 65 CM deep to be made it is opened at top find the area of sheet required to cover it
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Area of sheet = 2(lb+bh+hl)
= 2 ( 15×1.25 + 1.25×65 + 65×15)
=2 ( 18.75 + 81.25 + 975)
= 2 ( 1075 )
= 2150cm^2
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