Question

a plastic box 1.5m long .1.25m wide and 65cm deep is to be made .It is open at the top .Ignoring the thickness of the plastic sheet ,determine the area of the sheet required for making the box.

Answer 1

TSA of box (without the top)
= lb + 2bh + 2hl
= (150×125 + 2×125×65 + 2×65×150)sq. cm
= 18750 + 16250 + 19500
= 54500 sq. cm

Area of required plastic sheet = 54500 sq. cm

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