Question

Find the volume of a cylinder, if the diameter (d) of its base and its altitude (h) are: i d= 21 cm, h= 10 cm ii d= 7 cm, h= 24 cm



can someone pls reply…

Answer 1

Answer:

Given Diameter of cylinder (d) =21 cm

⇒ Radius of cylinder (r) =

2

d

=

2

21

=10.5 cm

And, Altitude of cylinder (h) =40 cm

Hence, Volume of cylinder =πr

2

h=

7

22

×(10.5)

2

×40=13860 cm

3

(i) Given Diameter of cylinder (d) =7 m

⇒ Radius of cylinder (r) =

2

d

=

2

7

=3.5 m

And, Altitude of cylinder (h) =24 m

Hence, Volume of cylinder =πr

2

h=

7

22

×(3.5)

2

×24=924 m

3