Question

find the volume of the circular cylinder which has the base radius of 21 m and height 14 cm​

Answer 1

Given :

• Radius of Cylinder is 21 m .
• Height of Cylinder is 14 m.

To Find :

• Volume of Cylinder .

Solution :

$\longmapsto\tt{Radius=21\:m}$

$\longmapsto\tt{Height=14\:cm=0.14\:m}$

Using Formula :

$\longmapsto\tt\boxed{Volume\:of\:Cylinder=\pi{{r}^{2}h}}$

Putting Values :

$\longmapsto\tt{\dfrac{22}{{\cancel{7}}}\times{{\cancel{21}}}\times{21}\times{0.14}}$

$\longmapsto\tt{22\times{3}\times{21}\times{0.14}}$

$\longmapsto\tt\bf{194.04\:{m}^{3}}$

So , The Volume of Cylinder is 194.04 m³ .

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• Curved Surface Area of Cylinder = 2πrh
• Total Surface Area of Cylinder = 2πr(r+h)
• Volume of Cylinder = πr²h

Here :

• r = radius
• h = height
• π = 3.14 or 22/7

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Answer 2

Step-by-step explanation:

Given :

• Base radius (r) = 21 m
• Height (h) = 14 cm

To find :

• Volume of the circular cylinder.

Solution :

We have,

=> Radius = 21 m

=> Height = 14 cm

=> Height = 14/100 m

=> Height = 0.14 m

Volume of cylinder,

>> πr²h

=> 22/7 × 21 × 21 × 0.14

=> 66 × 21 × 0.14

=> 194.04

• Hence, the volume of cylinder is 194.04 m³.

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