Answers

2016-03-10T09:46:16+05:30
Given h=21 cm
 l.s.a = 792 cm sq.
2*pi*r*h = 792
2*22/7*r*21 = 792
r  = 792*1/2*7/22*1/21
   = 792*7
       2*22*21
r= 6 cm
diameter = 2r = 12 cm
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