Question

39. A cuboid is 7 cm long. 4 cm broad and 3
cm high and a cube has edge of 5 cm.
What is the difference between their
volumes?
(a) 21 cu. cm (b) 22 cu. cm
(c) 41 cu.cm (d) 47 cu. Cm​

Answer 1

Cuboid'-

L = 7cm

B = 4cm

H = 3cm

Volume = LBH = 7 × 4 × 3 = 84cm³

Cube:-

E = 5cm

Volume = E³ = 5³ = 125cm³

Their difference = 125 - 84 = 41cm³

So c) is correct means 41cm³

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Answer 2

Step-by-step explanation:

Volume of Cuboid = l×b×h

l=7cm

b=4cm

h=3cm

Volume of the Cuboid with the given above measures is

=> 7×4×3 = 84 cu. cm

Volume of the Cube = side × side × side

Side = 5 cm

Volume of the Cube with the given above side measure is

=> 5 × 5 × 5 = 125 cu. cm

Hence, the difference between their volumes =

Volume of the Cube - Volume of the Cuboid

= 125 cu. cm - 84 cu. cm

= 41 cu. cm

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