Question 72

The number of circular pipes with an inside radius 0.5 cm which will carry the same amount of water as a pipe with an inside radius of 3 cm is

Name: The number of circular pipes with an inside radius 0.5 cm which will carry the same amount of water as a pipe with an inside radius of 3 cm is
Uploaded: 2026-06-19T14:44:23.944335+05:30
Duration: 4 min 25 s
Description: The number of circular pipes with an inside radius 0.5 cm which will carry the same amount of water as a pipe with an inside radius of 3 cm is

Solution

Radius of small pipes = 0.5 cm and big pipes = 3 cm

=> Number of circular pipes required = $$\frac{\pi R^2}{\pi r^2}$$

= $$\frac{3^2}{0.5^2}=\frac{9}{0.25}$$

= $$9\times\frac{4}{1}=36$$

=> Ans - (D)

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