The difference between outside and inside surface of a cylindrical metallic pipe 14cm long is 44cm^2. If the pipe made of 99 cu cm of metal.Find the outer and inner radiiof the pipe
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HERE IS YOUR ANSWER. .
Let R cm and r cm be external and inner radii of the metallic pipe resp.
h = 14 cm
2pie Rh - 2pie rh = 44
2×22/7 × 14 (R -r ) = 44
(R - r ) = 1/2. 1 .eq
Vol of pipe = 99
pie R^2 h - pie r^2 h = 99
22/7 × 14 (R+r) ( R-r) = 99
(R + r ) = 9/2. 2 eq
From eq 1. and eq. 2
R = 2.5 cm
r= 2 cm
HOPE IT HELPS YOU
Let R cm and r cm be external and inner radii of the metallic pipe resp.
h = 14 cm
2pie Rh - 2pie rh = 44
2×22/7 × 14 (R -r ) = 44
(R - r ) = 1/2. 1 .eq
Vol of pipe = 99
pie R^2 h - pie r^2 h = 99
22/7 × 14 (R+r) ( R-r) = 99
(R + r ) = 9/2. 2 eq
From eq 1. and eq. 2
R = 2.5 cm
r= 2 cm
HOPE IT HELPS YOU
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