The diameter of a metal pipe is 21cm and height 14cm . Find the total surface area .
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tsa of cylinder=2πr(h+r)
guven diamtere=21cm;radius=21/2=10.5cm
height=14cm
=2*22/7*10.5(14+10.5)
=2*22*1 .5(24.5)
=1617cm^2
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