Answer:
2 km
Step-by-step explanation:
4π = π × r²
r² = 4
r = 2
These are the the letters that look the same when reflected across the line B,C,D,E,H,I,K,O,X
Seems to be an arythmetic sequence
common difference is 3 (increases by 3 each time)
an=a1+d(n-1)
d=3
a1=8
an=8+3(n-1)
an=8+3n-3
an=3n+5