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Home > PC > Chapter 5 > Lesson 5.2.4 > Problem 5-88


A cone has a height of inches and a radius of inches. If a plane cuts the cone inches above the base of the cone, in terms of and what is area of the circular cross section?

Cone pointing up, segment from vertex to center of circle base, labeled 10, with circle contained within the cone about 1 third down, segment from center of small circle to center of base circle labeled, h, radius on circle base meeting right edge of cone, labeled k.

1. Label the sides of the smaller triangle.
2. Then write a proportion between the sides of the smaller triangle and the larger triangle.
3. Solve for .