find the total surface area of a cylinder whose height and radius of base and 20 cm and 28 cm respectively
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t.s.a =2 pie r h + 2 pie r^2
=2* 22/7* 28*20+ 2 *22/7 * 28*28
=3520+ 4982
= 8502 cm2
=2* 22/7* 28*20+ 2 *22/7 * 28*28
=3520+ 4982
= 8502 cm2
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