Question

The volume of a cylindrical pipe is 748 cm3 . Its length is 0.14 m and its internal radius is 0.09m . Find thickness of pipe.

Answer 1

HELLO DEAR,


volume of the metallic cylindrical pipe = 748CM²

length of the cylindrical pipe h = =0.14M =14 cm

external radius of the pipe R = 0.09M= 9 cm

let the internal radius of the cylindrical pipe be r cm.

therefore the volume of the metallic pipe =

$\pi( { R}^{2} - {r}^{2} )h$
$\frac{22}{7} ( {9}^{2} - {r}^{2} ) \times 14 = 784 \\ = > 44(81 - {r}^{2} )= 784 \\ = > 81 - {r}^{2} = \frac{784}{44} \\ = >81 - {r}^{2} = 17 \\ = > {r}^{2} = 81 - 17 \\ = > {r}^{2} = 64 \\ = > r = 8cm$
thickness of the metallic pipe = R-r=9-8=1 cm


I HOPE ITS HELP YOU DEAR,
THANKS

Answer 2

Answer:

8.83 cm

Step-by-step explanation: