Question

9. How many spheres each of radius 1cm will have their total surface area equal to that of a single sphere of radius

5cm?​

Answer 1

Answer:

volume of sphere of radius 10cm=

3

4

π×10

3

volume of sphere of radius 1cm=

3

4

π×1

3

no of balls =

volume of sphere of radius 1 cm

volume of sphere of radius 10 cm

=

3

4

π×1

3

3

4

π×10

3

=1000