Math, asked by princess54, 1 year ago

find the surface area of sphere of diameter 21cm

Answers

Answered by Róunak

66

The soln. is in the pic....

Attachments:

Answered by lakshitha46

32

Answer:

gn:

diameter (d)= 21cm

radius (r) = 21/2 cm

solu:

surface area of a sphere = 4*pie*r ^2

=4*22/7*21/2*21/2

=66*21

=1386cm ^2.

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