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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


8.1 Introduction to solid geometry
8.2 Prism
8.3 The cuboid and the cube
8.4 Cylinders
8.5 Pyramids
8.6 Right circular cone
8.7 Sphere

Chapter 9

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