Question

What is the curved surface area of the cylinder if the radius of a cylinder is 7 cm and its height is 10 cm?​

Answer 1

Given :

• Radius of Cylinder is 7 cm .
• Height is 10 cm .

To Find :

• Curved Surface Area of Cylinder .

Solution :

$\longmapsto\tt{Radius=7\:cm}$

$\longmapsto\tt{Height=10\:cm}$

Using Formula :

$\longmapsto\tt\boxed{C.S.A\:of\:Cylinder=2\pi{rh}}$

Putting Values :

$\longmapsto\tt{2\times\dfrac{22}{{\not{7}}}\times{{\not{7}}}\times{10}}$

$\longmapsto\tt{2\times{22}\times{10}}$

$\longmapsto\tt{44\times{10}}$

$\longmapsto\tt\bf{440\:{cm}^{2}}$

So , C.S.A of Cylinder is 440 cm² ..

_______________________

• C.S.A of Cylinder = 2πrh
• T.S.A of Cylinder = 2πr(r+h)
• Volume of Cylinder = πr²h

_______________________

Answer 2

Answer :-

• C.S.A of the cylinder is 440cm².

Given :-

• The radius of a cylinder is 7 cm and its height is 10 cm.

To Find :-

• Curved surface area of the cylinder.

Solution :-

Here

• Radius of the cylinder is 7cm.
• Height of the cylinder is 10cm.

As we know that

Curved surface area of a cylinder is

2πrh

Put the values in the formula

Now,

⇒ C.S.A = 2 × 22/7 × 7 × 10

⇒ C.S.A = 2 × 22 × 10

⇒ C.S.A = 44 × 10

⇒ C.S.A = 440cm²

Hence, the C.S.A of the cylinder is 440cm².

Extra Shots :-

• Volume of cylinder = πr²h cubic units
• Total surface area of cylinder = 2πr (h + r) square units