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


5 cm, 2 cm , 11cm

Given:

l = 5cm, b = 2cm and h = 11cm


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


= 2(5(11) + 2(11))


= 2(55+22)


= 2(77) = 154cm2


⇒ LSA of cuboid = 154cm2


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


= 2(5(11) + 2(11) + 5(2))


= 2(55+22+10)


⇒ TSA of cuboid = 174cm2


(c) Volume of cuboid = l× b× h


= 5× 2× 11


⇒ Volume of cuboid = 110cm3


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