Iam a two digit dividend with 5 tens. one of my divisors is 8.what am i?

In the diagram below what is the approximate length of the minor arc ab

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

Which expression gives you the distance between the points (5,1)and(9,-6)