Question

1r1r of a circular pizza has been eaten. If the rest of the pizza is divided into m equal slices, then each of these slices is what fraction of the whole pizza?


A) rrmrrm

B) (r−1)rm(r−1)rm

C) 1m1m

D) (m−1)rm(m−1)rm

E) (m−r)rm

Answer 1

Answer:

total area = πr^2

Eaten= 1/r (πr^2) = πr

left= total- eaten = πr(r-1)

m equal slices= (πr(r-1))/m

fraction of the whole pizza= (πr(r-1))/m*(πr^2) = r-1/mr (B)