The curved surface area of the cone is pi r l- then the total surface area of the cone is-pi r-r-l-pi rl-r-l-2pi rl-r-l-2pi r-2l-r-l-

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The curved surface area of the cone is $π r l,$ then the total surface area of the cone is:
$π r (r + l)$
$π r l (r + l)$
$2 π r l (r - l)$
$2 π r^{2} l (r + l)$

Given: Curved surface area of cone $= π r l$

We know, the total surface area of cone $=$ curved surface area of cone $+$ area of circular base.

and area of circular base $= π r^{2}$

Then, the total surface area of cone $=$ $π r l + π r^{2}$

$= π r (l + r)$

The curved surface area of the cone is πrl, then the total surface area of the cone is:πr(r+l)πrl(r+l)2πrl(r−l)2πr2l(r+l)

Given: Curved surface area of cone =πrlWe know, the total surface area of cone = curved surface area of cone + area of circular base.and area of circular base =πr2Then, the total surface area of cone = πrl+πr2 =πr(l+r)

The curved surface area of the cone is $π r l,$ then the total surface area of the cone is:
$π r (r + l)$
$π r l (r + l)$
$2 π r l (r - l)$
$2 π r^{2} l (r + l)$

Given: Curved surface area of cone $= π r l$

We know, the total surface area of cone $=$ curved surface area of cone $+$ area of circular base.

and area of circular base $= π r^{2}$

Then, the total surface area of cone $=$ $π r l + π r^{2}$

$= π r (l + r)$