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


2 m, 3 m, 7 m

Given:

l = 2m, b = 3m and h = 7m


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


= 2(2(7) + 7(3))


= 2(14+21)


= 2(35) = 70m2


⇒ LSA of cuboid = 66m2


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


= 2(2(7) + 7(3) + 2(3))


= 2(14+21+6)


⇒ TSA of cuboid = 82m2


(c) Volume of cuboid = l× b× h


= 2× 3× 7


⇒ Volume of cuboid = 42m3


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