### Home > GC > Chapter 9 > Lesson 9.2.3 > Problem 9-83

9-83.

West High School has a math building in the shape of a regular polygon. When Mrs. Woods measured an interior angle of the polygon (which was inside her classroom), she got

How many sides does the math building have? Show how you got your answer.

Draw a diagram. What does it show? Refer to Math Note Box 8.1.5 for the formula for calculating the interior angle of a polygon.

The building has

sides. If Mrs. Wood’s ceiling is

feet high and the length of one side of the building is feet, find the volume of West High School’s math building.