Answer:
yes 8/15 is greater and 2/3 is less than
I think it's the last one, i'm not sure though
Do you mean the hypotenuse of the triangle?
If so, you can use pythagorean theorem:
a^2 + b^2 = c^2
11^2 + 8^2 = c^2
121 + 64 = 185 = c^2
c = sqrt(185) = 13.6
175:300 is simplified to 35: 60 which is simplified to 7: 12 whichis your final answwer