Question

An iron ball of diameter 42cm is melted to form an iron brick whose shape is a rectangular parallelepiped of length 49cm and breadth 36cm, what is the thickness of the brick?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Thickness will be 22 cm

Step-by-step explanation:

Radius of iron ball = 42/2 = 21

V of iron ball = 4/3 π r^3

                     = 4/3 * 22/7 * (21*21*21)

                     = 38808

Let thickness of brick be 'x',

49*36*x = 38808 cm^3

1764*x = 38808

x = 38808/1764

x = 22

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