I don't get this and I need help please. Find the circumference of a circle circumscribed about a square with perimeter 48 ft. ______________ft. (Round to the nearest 0.1 ft.)
The side length of the square is 12 ft. The distance from the center of the square to a corner is 6*sqrt2.
Draw a figure to convince yourself.
6*sqrt2 is also the RADIUS of the circumscribed circle, which has its center at the center of the square.
The circle's circumference is
2*pi*R = 12*pi*sqrt2 = 53.3 ft, a bit more than the square's perimeter. That makes sense.