The answer would be H: 126mm
If the circumference of a circle is 56.52mm, and the formula for circumference is C=πd(d=diameter), then reverse division would result in 56.52 divided by 3.14, which equals 18. Since there are four circles, in which each circumference is 18mm, and three 18mm spaces, 18 times 7(4+3) would result in 126mm.
