Question

22. The diameter of cylinder is 14 cm, and its height is 15 cm. find the CSA of cylinder.​

Answer 1

Answer:

The diameter of base of a cylinder is 14 cm and its height is 20 cm. Find the whole surface area and volume.

Step-by-step explanation:

Answer

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Given: Diameter of base of cylinder =14 cm.

∴ Radius (r)=

2

14

=7 cm.

and Height of cylinder is h=20 cm.

So, Surface area of cylinder =2πr(r+h)

=2×

7

22

×7(7+20)

=44×27

Surface area of cylinder =1188 sq.cm.

Volume of cylinder =πr

2

h

=

7

22

×7

2

×20

=22×7×20

Volume of cylinder=3080 cu.cm

Answer 2

Diameter = 14 cm, Radius = 7 cm, Height = 15 cm

CSA = 2πrh

= 2 x 22/7 x 7 x 15

= 660 cm^2

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