Answers

2016-04-05T10:45:08+05:30
Side =12 cm So 2 pie r = 12 cm 2 pie r =12 Pie r = 6 cm r= 6 ×7÷22 r = 21/11 CSA of cylinder = 2 pie rh 2 pie rh =2×22/7 ×21/11×12 = 144 cm ^2
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2016-04-05T11:55:03+05:30
 Circumference of the base circle = 2 x pi x r =12cm
 Height of the cylinder = 12 cm
 C.S.A of a cylinder  = 2 x pi x r x h
                                  = (2 x pi x r) x h
                                  =12 x 12
                                  = 144 sq cm.
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