Math CentralQuandaries & Queries


I've seen the other question about surface areas. I still don't understand the lateral area.

In my math book, it has (pi * r * L) as the equation, r = radius and L = height of the cone.

This is 8th grade math. Thanks.

Hi Michael,

The lateral area of a cone is pi x r x L where r is the radius but L is the slant height. Look at what Walter wrote to respond to a similar question a while ago.


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