Bryan's chimney is rectanglular, with the short side being half the length of the long side. If Santa's belly is 58 inches in circumference, and he just fits through the chimney, what are the smallest possible dimensions of Bryan's chimney? Assume Santa's belly is perfectly round. Express your answer to the nearset tenth.

The formula for circumference is C = pi * diameter

58 = 3.14 * d
58/3.14 = d
18.5 = d

The chimney must be 18.5 inches along the short side. The long side must be twice that.