Answer :
Make a square with each side (square root of 2) times the cicrcle's radius (1/2 the diameter) and the square exactly fits inside the circle.
Answer:
You draw 2 diameters through the center of the circle. The 2 diameters must be perpendicular. The vertexes of the square are the 4 points where the diameters meet the circles.
Step-by-step explanation: