Question

find the volume of a sphere whose number is 21​

Answer 1

Step-by-step explanation:

Diameter = 21 cm

r=

2

21

cm

Volume of the sphere=

3

4

πr

3

=

3

4

×

7

22

×

2

21

×

2

21

×

2

21

=4851cm

3

Answer 2

Answer:

Radius = 21 cm/2

Volume of sphere = 4/3 × π × r³

= 4/3 × 22/7 × 21/2 × 21 /2× 21/2

= 4851 cm³