Solve the Problem $\mathrm { r }$ Of a Circle of Known Area

Multiple Choice

Solve the problem.
-The radius $\mathrm { r }$ of a circle of known area $\mathrm { A }$ is given by $\mathrm { r } = \sqrt { \mathrm { A } / \pi }$ , where $\pi \approx 3.1416$ . Find the radius

A) $\mathrm { r } = 1.40 \mathrm { ft } , \mathrm { C } = 8.86 \mathrm { ft }$
B) $\mathrm { r } = 1.40 \mathrm { ft } , \mathrm { C } = 8.80 \mathrm { sq } \mathrm { ft }$
C) $\mathrm { r } = 1.96 \mathrm { ft } , \mathrm { C } = 12.32 \mathrm { ft }$
D) $\mathrm { r } = 1.40 \mathrm { ft } , \mathrm { C } = 8.80 \mathrm { ft }$