Question

If the radius = 3 cm, height = 14 cm then curved surface area of cylinder
a. 88 cm2 b. 132 cm
c. 264 cm2
66 cm2
​

Answer 1

Answer:

• Curved surface area ( CSA) of the cylinder = 264 cm²

✅Option : c

Step-by-step explanation:

GIVEN:

• Radius of cylinder (r) = 3 cm
• Height of cylinder (h) = 14 cm

TO FIND:

• Curved surface area ( CSA) of the cylinder

SOLUTION:

To find the CSA of Cylinder, we use the formula:-

$\large{\green{\boxed{\bf{\star \: C.S.A. = 2 \pi rh \: \star}}}}$

According to question:-

$\rm{\bf\: CSA = 2 \times \dfrac{22}{\cancel{7}} \times 3 \times \cancel{14} }$

$\rm{\longrightarrow\:\bf\: CSA = 2 \times 22 \times 3 \times 2 }$

$\bf{\longrightarrow CSA = 264 \: cm^2 }$

So,

Curved surface area ( CSA) of the cylinder = 264 cm²

Answer 2

Answer:

The curved surface area of the given cylinder is equal to 264cm².

Step-by-step explanation:

Consider that radius and height of a cylinder represented by 'r' and 'h' respectively.

Given:

The radius of cylinder, $r =3cm$

The height of the cylinder, $h=14cm$

The curved surface area of the cylinder will be:

$C.S.A.=2\pi rh$                                                           ..................(1)

Put the value of radius and height in eq.(1):

$C.S.A.=2(\frac{22}{7} )(3cm)(14cm)$

$C.S.A. =264cm^{2}$

Therefore, the curved surface area of the cylinder is 264cm².