Answers

2015-01-21T18:43:47+05:30
CSA of a cone= pi*r*l
                     =22/7*r*10
l²=r²+h²; r²=l²-h²; =100-64=36;r=6
            hence,CSA= 22/7*6*10=1320/7 =188.5714...m²
i think it's the right answer
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