Answer:
Rational.
Step-by-step explanation:

Answer:
12.4
Step-by-step explanation:
73.16/5.9
Answer:
3.14
Step-by-step explanation:
A quarter circle is just 1/4 of an entire circle's area. Since you know the radius is two, simply find the area of the entire circle and divide by 4.
4pi/4 = pi
I believe it is congruent