Question

the volume of metallic cylindrical pipe is 749 cm cube .its length is 14cm and its external radius 9cm find the thickness of pipe

Answer 1

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dimensions of a pipe
Height =h=14cm
Radius = r.cm
Given
Volume =748 cm^3
Pi*r^2*h=748
22/7*r^2*h=748

r^2 =(748*7)/(22*14)

r^2=17

r = root 17
r = 4(approximately)
Given external radius R= 9cm
Thickness of the pipe =9-4
=5cm

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Answer 2

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