Question

Radius Of The Base Of A Right Circular Cylinder Is 14 dm And Height Is 15 m Find The Curved Surface Area Of The Cylinder ​

Answer 1

Given:

Radius Of The Base Of A Right Circular Cylinder Is 14 m And Height Is 15 m

To find:

Find The Curved Surface Area Of The Cylinder

Solution:

From the given information, we have the data as follows.

Radius Of The Base Of A Right Circular Cylinder Is 14 m And Height Is 15 m.

We are asked to find the value of the curved surface area of the cylinder.

The formula for computing the value of the curved surface area of the cylinder is given as follows.

C = 2πrh

C = 2π × 14 × 15

C = 420π m²

Therefore, the curved surface area of the cylinder is 420π m²

Answer 2

We know that volume of the cylinder =πr2 h

Here r=14 dm=1.4 m, h=15 m

So,

$\tt V=22/7×1.4×1.4×15$

$\tt V=92.4 m^3$

Also we know that curved surface area of cylinder=$2πrh$

So,

Curved surface area =$\tt 2×22/7×1.4×15$

$\tt Curved\;surface\; area =132 m^2$

We know that total surface area of cylinder =2π(r+h)

So,

$\tt Total\;surface\;area =2×22/7×1.4(1.4+15)$

$\tt Total\;surface\; area =144.32 m^2$