find the total surface area of a cone if its slant height is 21 metres and diameter of its base is 24 metres
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Step-by-step explanation:
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Given :
l=21m
d=24m
r=12cm
WKT TSA of cone = pie.r(r+l)
=22/7(12)(12+21)
=22/7(12)(33)
=1244.571m^3
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