Question: f64. The area A enclosed by a circle, in square meters, is a function of its radius r, when measured in meters. This relation is

$\f64. The area A enclosed by a circle, in square meters,$ is a function of its radius r, when measured in meters. This

relation is expressed by the formula A(r) = ar for r >

0. Find A(2) and solve A(r) = 167. Interpret your answers to

\f64. The area A enclosed by a circle, in square meters, is a function of its radius r, when measured in meters. This relation is expressed by the formula A(r) = ar for r > 0. Find A(2) and solve A(r) = 167. Interpret your answers to each. Why is r restricted to r > 0

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