Question

find csa and tsa and volume of a sphere if r=2.1 cm​

Answer 1

Answer:

volume

4/3πr3=4/3*22/7*2.1×2.1×2.1

=4*22*0.3×0.7×2.1

=38.808 cm3

csa=4πr2=4*22/7*2.1×2.1

=55.44 cm2

sphere curved surface area and total surface area are same

tsa=55.44 cm2