Q1 of 64 Page 80

Find the L.S.A, T.S.A and volume of the cuboids having the length, breadth and height

respectively as


20 m, 12 m, 8 m

Given:

l = 20m, b = 12m and h = 8m


(a) LSA of cuboid = 2(lh+hb)


= 2(20(8) + 8(12))


= 2(160+96)


= 2(256) = 512m2


⇒ LSA of cuboid = 512m2


(b) TSA of cuboid = 2(lh+hb+lb)


= 2(20(8) + 8(12) + 20(12))


= 2(160+96+240)


⇒ TSA of cuboid = 992m2


(c) Volume of cuboid = l× b× h


= 20× 12× 8


⇒ Volume of cuboid = 1920m3


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