2x+4 is the length of one side
Answer:
35
Step-by-step explanation:
210/10=21 pens per friend
21+27=48 pens for benjamin
48-13=35 pens left
benjamin has 35 pens now
Arc length = radius * central angle (in radians)
arc length = 63 * 2PI/9 radians
arc length = 14 PI