Q3 of 189 Page 512

The length, breadth and height of a cuboid are 15 m, 6 m and 5 dm respectively. The lateral surface area of the cuboid is

Given: Length = 15 m


Breadth = 6 m


Height = 5 m


Lateral surface area of a cuboid = 2(Length +Breadth) × Height


1 m = 10dm


⇒ 5dm =0.5m


Lateral surface area = 2(15+6) × 0.5 m2 = 1× 21 m2


= 21 m2

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