Question

Find the Total Surface Area and the Lateral Surface Area of a cuboid whose
dimensions are: length = 20 cm, breadth = 15 cm and height = 8 cm

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Answer 1

Total surface Area of cuboid = 2(lb + bh + hl) sq. units = 2(20 x 15 + 15 x 8 + 8 x 20) = 2(300 + 120 + 160) = 2 x 580 = 1160 cm2

Lateral surface area of a cuboid = 2h(l + b) sq. units = 2 x 8(20 + 15) = 16 x 35 = 560 cm2..