Any one knows how to calculate the length of an arc in a circle - All the info we are given are that the tranversal between the chord and the parallel diameter intersects the diameter at angle of 35 degrees and the diameter is 18? This was a question from GMATPrep I was stumped on. Appreciate the help !!
I think I remember that question. The thing is that half of the arc takes 70 degrees out of the O, so 140 degrees are covered, but u need to find the perimeter from 180-140 = 40 degrees, which is 1/9 of the O's perimeter (1/9 of the 360 degrees). Use the diameter, and u will get that the minor arc comes out to 2pi.