The base area of the cone is 668 cm and its height is 28 cm find its total surface area
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Step-by-step explanation:base area of cone is 668cm²
=pie×r²
22/7×r²=668
r²=668×7/22
r²=212.54
r=14.5
l²=h²+r²
l²=28²+14.5²
l²=784+210
l=underroot994
l=31.5
TSA=pie×r(l+r)
=22/7×14.5(31.5+14.5)
=2096cm² approx
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