Aworld class barrel racing champion wants to build a custom practice area. she wants to keep a perimeter of 200ft. express the area a(l) for a rectangle with this perimeter.

Step-by-step explanation:

Area and Perimeter of a Rectangle

A rectangle is a four-sided shape where each pair of opposite sides have the same length and all the internal angles are 90°. The area of a rectangle with sides b and h is

The perimeter is the sum of all 4 sides

We know the perimeter of the rectangle is 200 feet, thus

Or, equivalently

Replacing b in the formula for the area, we have

For example, if h=30, the area is

A=100*30-30^2=3000-900=2100