Q1 of 76 Page 18

Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.

Given,


Length of a cuboid =80 cm


Breadth of cuboid = 40 cm


Height of cuboid = 20 cm


So, lateral surface area of cuboid = 2(l+b)h = 2(80+40)×20 = 4800 cm2


Total surface area of cuboid = 2(lb+bh+hl) = 2(80×40+40×20+20×80) = 11200 cm2


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