Question

the volume of a metallic cylinder pipe is 748 centimetre cube if the length is 14 cm and its external radius is 9 cm find its thickness ​

Answer 1

$\mathtt{\huge{\underline{\red{Answer\: :}}}}$

${\huge{\underline{\pink{Given :}}}}$

Height ( h ) = 14 cm.

Volume = 748 cm.

External radius = 9 cm.

${\huge{\underline{\pink{According\:to\:the\:question\: :}}}}$

Let the radius be ' r cm '

Formula = πr^2h = volume

=> 22 / 7 × r^2 × 14 = 748

=> r^2 = ( 748 × 7 / 22 ) × 14

=> r^2 = 5236 / 22 × 14

=> r^2 = 238 × 14

=> r^2 = 17

=> r = √17

=> r = 4.

Thickness of pipe = External radius - radius

=> 9 - 4

=> 5 cm.

Therefore, Thickness of

pipe = 5 cm. ☺❄☺