The answer is D. Alternate Interior
D 180 pages. 1.5 x 60 is 90 x 2 is 180
Let x=small circle
2x = bigger circle
πx^2 + π(2x)^2 = 80π
x^2 + 4x^2 = 80
5x^2 = 80
x^2 = 16
x = +/- 4
but we need the positive one because there's no negative measurement so
the answers are:
4m and 8m
40. Divide 81 by 41. 41 goes into 81 once with a remainder of 40
