what fractional part of a circle is an arc that measures 8, 240, 144, and 315?
I'm assuming these measures may be in degrees.....assuming so, we have....
8 / 360 = 1/45 of a circle
240 / 360 = 2/3 of a circle
144 / 360 = 12/ 30 = 2 /5 of a circle
315 / 360 = 7/8 of a circle
Your question needs to be more specific, 8 what? Sheep? Monkeys? Pies? Revolutions? Radians? Degrees?