Solve. -A Rectangle That Is X Feet Wide Is Inscribed in in a Circle

Multiple Choice

Solve.
-A rectangle that is x feet wide is inscribed in a circle of radius 20 feet. Express the area of the rectangle as a function of x. Graph the function and from the graph determine the value of x, to the
Nearest tenth of a foot, which will maximize the area of the rectangle.

A) 28.3 feet
B) 28.7 feet
C) 29.1 feet
D) 27.9 feet