Determine whether each of the following problems will have a rational or an irrational answer. Your
answer should be either the word "rational or
"irrational."
18 + Pie symbol

Answer this question, only if you know the answer. 30 points and brainliest!

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4