## Elementary Geometry for College Students (6th Edition)

$\approx$ 1256 $ft^{2}$
Given A circular grass courtyard at a shopping mall has a 40-ft diameter. This area needs to be reseeded To find the total area to be reseeded We know the area of the circle which has radius r = $\pi r^{2}$ Area of circle = $\pi (\frac{40}{2})^{2}$ = $\pi (20)^{2}$ =400$\pi$ =1256.63 $ft^{2}$ $\approx$ 1256 $ft^{2}$