Question

Find the surface area of asphere whose radius is 2.1cm​

Answer 1

S.A.=4πr2

=4×722​×(2.1)2

=55.44cm2

Answer 2

Answer:

S.A.= 55.44$cm^{2}$

Step-by-step explanation:

S.A.= 4πr^2

= 4×22/7×2.1 ×2.1

=55.44$cm^{2}$

HOPE IT HELPS!!!