## Elementary Algebra

The area is 0.25$\pi$ yard ssquared.
The formula for the area of a circle is $\pi$ $\times$ $r^{2}$ The diameter is twice the radius. So: d = 2r 1 = 2r r = 0.5 Substitute 0.5 for r to obtain: A = $\pi$ $\times$ $0.5^{2}$ A = $\pi$ $\times$ 0.25 A = 0.25$\pi$