Who ever answers first gets brainliest! I know that the answer for a is 7.1 and the answer for b is 22.3 but I don’t know how to get it. SOMEONE PLEASE EXPLAIN!

Eastward High School needs a new logo
for the gym floor. The logo must fit inside
a square with an area of 25.0 m2 and be
bordered by a circle.

a) A line for basketball tip-offs will run
through the middle of the circle. How
long will this line be?

b) What will be the circumference of the
circle around the logo?