Question

a hollow cylinder of 42 cm diameter and length of 152 cm is made of iron 2 cm thick. . find the volume of iron used in the cylinder. ...........plz answer it ​

Answer 1

Answer:

$\bold\red{Solution}$

GIVEN -

Diameter of Cylinder - 42 cm

Length of Cylinder (Height) - 152 cm

Thickness - 2 cm

Step by step

Radius after thickness = (21 - 2)

$\implies{19 cm}$

$\bold\blue{Radius\:of\:the\:Cylinder\:be\:19\: cm-}$

Volume of the Cylinderical Iron -

= πh(R²-r²)

= $\frac{22}{7}×152×40×2$

$\implies{38217.14\:cm³}$

Hence,

The volume of iron used in the Cylinder will be 38217.14 cm³.