Question

2. If the diameter of a cylinder
is 28 cm and its height is 20 cm,
then its curved surface area is​

Answer 1

Answer:

1760 cm

Step-by-step explanation:

Diameter of cylinder (d)=28cm

Radius of cylinder (r)=  

2

d

​  

=14cm

Height of cylinder (h)=20cm

As we know that, curved surface area of cylinder is given as-

CSA=2πrh=2×  

7

22

​  

×14×20=1760cm  

2

Answer 2

Answer:

The Curved Surface Area of Cylinder is 1760 $cm^{2}$.

Step-by-step explanation:

Given,

Diameter of Cylinder = 28 cm

Radius of cylinder = 14 cm

Height of Cylinder = 20 cm

∵ Curved Surface Area of Cylinder = 2πrh

∴ C.S.A  = 2 * 22/7 * 14 * 20

C.S.A  = 2 * 22 * 2 * 20

C.S.A  = 4 * 22 * 20

C.S.A  = 1760 $cm^{2}$

Hence , The Curved Surface Area of Cylinder is 1760 $cm^{2}$.