Question

Suppose the area of a circle is π. What is its diameter?

Answer 1

πr^2 = π
then r^2=1
r=1
d=2r=2

Answer 2

\[A = \pi r ^2\] \[\text{If} \space A = \pi \space \text{then}\]\[\pi = \pi r^2\] and r = 1 and d = 2r = 2