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

5-88.

A cone has a height 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?*

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 .