Question

Find the surface area and volume of the sphere of radius 3.5 cm​

Answer 1

$here \: is \: your \: answer \\ \\ surface \: area \: of \: sphere \: having \: radius \: r = 4\pi r {}^{2} \\ \\ = > \: \: 4 \times 3.14 \times (3.5) {}^{2} \\ \\ = 153.86cm {}^{2} \\ and \\ \\ volume \: of \: sphere \: having \: radius \: r \: = \frac{4}{3} \pi \: r {}^{3} \\ \\ = \frac{4}{3} \times 3.14 \times 42.875 \\ \\ = 179.50cm {}^{3}$

Answer 2

Answer:

surface area of sphere=4πr^2

= 4×3.14×3.5×3.5

= 12.56×12.25

=153.86 cm^2

volume of sphere=4/3πr^3

=4/3×3.14×3.5×3.5×3.5

= 4/3×3.14×42.875

= 4/3×134.62

=179.4 cm^2

therefore surface area of sphere is 153.86cm.sq. and volume of sphere is 179.4cm.sq.