Question

What is the amount of air that can be held by a spherical ball of diameter 14 metres?

Answer 1

Answer:

Given radius r

1

=7 cm

r

2

=14 cm

Initial surface area (r

1

=7)=4πr

2

=4×

7

22

×7×7

=616 cm

2

Surface area (r

2

=14)=4πr

2

=4×

7

22

×14×14

=2464 cm

2

Ratio of surface area =

2464

616

=

4

1