Alex makes a 14 inch diameter pizza, which includes a 1 inch crust. Donald wants to make a 10 inch diameter pizza with the same percent of crust as Alex's pizza. To the nearest tenth of an inch, approximately how wide will the crust be on Donald's pizza?

Answer 1

14^2/15^2 = .871

r^2/10^2 = .871
r = 9.3
so, the crust edge will be 0.7 inch