Question

Find the c s a of right circular cylinder of base 3 centimetre and height 5 centimetre

Answer 1

Correct Question

Find the CSA of a right circular cylinder of base radius 3 cm and height 5 cm

Solution

The CSA of the given cylinder is 94.2 cm²

Given

• Radius of the Cylinder,r = 3 cm

• Height of the Cylinder,h = 5 cm

To finD

CSA of the Cylinder

Using the Relation,

$\boxed{\boxed{\sf CSA \ of \ Cylinder = 2 \pi rh}}$

Let y be the CSA of the cylinder

Substituting the values,we get :

$\tt \: y = 2\pi \: \times3 \times 5 \\ \\ \leadsto \: \tt \: y = 2 \times 3.14 \times 3 \times 5 \\ \\ \leadsto \: \tt \: y = 6.28 \times 15 cm^2 \\ \\ \leadsto \boxed{ \boxed{ \: \tt \: y = 94.2 \: {cm}^{2} }}$

Answer 2

$\huge\bold\green{Question}$

Find the C.S.A of right circular cylinder of base 3 centimetre and height 5 centimetre

$\huge\bold\green{Answer}$

According to the question we have given :-

•°• Radius ( r ) = 3 cm

•°• Height ( h ) = 5 cm

So, according to the question we have to find C.S.A of cylinder

By using the formula , we get the correct answer

$\tt\orange{ CSA \ of \ Cylinder = 2 \pi rh}$

Let " x" be the CSA of the cylinder , Now :-

Now , by substituting the known values in formula :

$\begin{lgathered}\implies\sf \: x = 2\pi \: \times3 \times 5 \\ \\ \implies \: \sf \: x = 2 \times 3.14 \times 3 \times 5 \\ \\ \implies \: \sf \: x = 6.28 \times 15 cm^2 \\ \\ \implies\green{ \: \sf \: x = 94.2 \: {cm}^{2} }\end{lgathered}$

Hence , the required C.S.A of cylinder is 94.2 cm²