Question

Find the CSA of cylinder with diameter 14cm and height 20 m​

Answer 1

Answer:

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

Step-by-step explanation:

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Answer 2

Answer:

CSA of cylinder = 2πrh

= 2× 22/7×14×21 = 1848 sq. cm

Step-by-step explanation:

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