Find the total surface area of a cone whose radius is 2runits and slan

1.	Find the total surface area of a cone whose radius is 2runits and slant height is 2l units.
Answer» givenslant height = 2lradius = 2rtotal surface area of the cone = 2πradius(radius+slant height)=2π2r[2r+2l]= 4πr 2(r+l)= 8πr (r +l) sq units

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