Question

find the curved surface area of a cylinder whose radius is 3.5 cm and height is 10 cm.​

Answer 1

Answer:

• 220 cm² is the required curved surface area of cylinder.

Step-by-step explanation:

According to the Question

It is given that,

• Radius ,r = 3.5cm
• Height ,h = 10cm

we have to calculate the Curved Surface Area of the cylinder .

• CSA of Cylinder = 2πrh

On substituting the value we get

↠ CSA of Cylinder = 2×22/7 × 3.5 × 10

↠ CSA of Cylinder = 44 × 0.5 × 10

↠ CSA of Cylinder = 44 × 5

↠ CSA of Cylinder = 220 cm²

• Hence, the curved surface area of the cylinder is 220 cm².

Answer 2

Curved surface area of cylinder is 21980$cm^{2}$

Given:- radius of cylinder=3.5m=3.5*100=350cm

height of cylinder=10cm

To find:- curved surface area of cylinder

Formula used:- C.S.A of cylinder= 2*pi*r*h

where pi=3.14

r=radius

h=height

Solution:-

r=350 cm h=10 cm

C.S.A of cylinder= 2*pi*r*h

C.S.A = 2*3.14*350*10

C.S.A = 21980$cm^{2}$

Curved surface area of cylinder is 21980$cm^{2}$