Question

13. Find the amount of water displaced by a solid spherical ball of
diameter 0.21 m.
4 x 3 = 12
​

Answer 1

Answer:

10th

Maths

Surface Areas and Volumes

Surface Area of Combined Solids

Find the amount of water di...

MATHS

Find the amount of water displaced by a solid spherical ball of diameter

(i) 28 cm

(ii) 0.21 m

MEDIUM

Share

Study later

ANSWER

Amount of water disploud by a solid phurical ball a equal to its volume

⇒

3

4

πr

3

; where

′

r

′

is radius of the ball.

(i) 28cm

∴ d=28cm, radius =

2

d

=

2

28

=14cm

∴ Volume =

3

4

×πr

3

=

3

4

×π×14×14×14=11498.66 cm

3

(ii) 0.21m=21cm

∴ d=21cm; radius =

2

d

=

2

21

cm

Volume =

3

4

×π×r

3

=

3

4

×π×

2

21

×

2

21

×

2

21

=4846.59 cm

3

Answer 2

Answer:

r=

2

21

=0.105

volumeofball=

3

4

πr

3

=

3

4

×

7

22

×(0.105)

3

=0.00485cm

3