Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below :)
Answer:
52
for every 4 pencils there is 1 eraser. 4/1=208/x
4x=208
x=52
circumference=2πr
=2×3.14×8.5
=53.38cm
A: 40%
B: 75%
C: 90%
