Question

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

Answer 1

Answer:

Given:-

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

Answered By suraj Kumar Yadav plz mark as brainlist

Answer 2

Step-by-step explanation:

QUETION:-

If the diameter of a cylinder is 28 cm and its height is 20 cm then its curved surface area is :

GIVEN:-

Diameter of cylinder (d) = 28 cm

Radius of cylinder (r) = d/2=14 cm

Height of cylinder (h) = 20 cm

SO:-

As we know that curved surface area of cylinder is Given as:-

CSA= $2\pi \: rh \:$

=>2×22/7×14×20 =$1760c {m}^{2}$

So the Curved surface area of cylinder is $1760c {m}^{2}$

Thanks :)