find the surface area of sphere of diameter 21cm
Answers
Answered by
66
The soln. is in the pic....
Attachments:
Answered by
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.
Similar questions