Question

of its base.
a) If the radius of a sphere is 21 cm, find its surface area and volume​

Answer 1

Answer:

I dontttttttttttt no the answer

Answer 2

Answer:

Given: radius of sphere is 21cm

to find: surface area, volume.

solution: surface area of sphere is 4×π×r^2

hence, surface area of sphere is 4×3.14×21^2

=12.56×21×21

=12.56×441

=5538.96

so, surface area of sphere =5538.96sq.cm

now, volume of sphere is 4/3×π×r^3

hence, volume of a sphere is 4/3×3.14×21^3

=4.082×21×21×21

=37803.402

so, volume of sphere =37803.402cu.cm

so, surface area and volume of given sphere is

5538.96sq.cm and 37803.402cu.cm respectively