Question

the area of a circle is given by (3.14k^2-12*3.14k+36*3.14) square inches. What is the radius?
I substituted the pi sign for 3.14 lol

Answer 1

\[\pi*k ^{2} - 12\pi*k + 36\pi\]
\[\pi(k^2 - 12k + 36)\]
\[\pi(k - 6)^2\]
Formula of Circle is \[\pi*r^2\]
so raidus is just (k - 6)