8.6 Right circular cone
A right circular cone is a circle with all points on its circumference joined to a point equidistant from all of them and outside the plane of the circle.
The lateral area of the right circular cone
The total area TA = (LA + BA) square units.
BA = base area = pr2
\ TA =
p r
l
+ pr2
= p
r ( l + r) square units
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