Answer:
<z and <y are vertically opposite angle(V.O.A)
Imagine a pie cut into 3 pieces
2 of the pieces has 216 calories
then for 1 piece it is 216/2 = 108
So total calories for the entire pie is 108 × 3 = 324
So there are 324 pages
the ans is..... 10.75 km......