Technology required. A regular pentagon has side length 7 inches. 

1. What is the perimeter of the pentagon?

2. What is the area of the pentagon?

Technology required. The expression \(n \boldcdot \sin \left( \frac{360}{2n} \right)\) approximates \(\pi\) by giving the perimeter of a regular polygon inscribed in a circle with radius 1.

1. What does \(n\) stand for in the expression?
2. If there are 60 sides, what is the difference between the perimeter and \(\pi\)