I need help with this please I’ll mark as brainliest!

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122