Answer:
15.6
Explanation:
Find the difference between coordinates:
(x2-x1) = (4 - -7) = 11
(y2-y1) = (3 - -8) = 11
Square the results and sum them up:
(11)2 + (11)2 = 121 + 121 = 242
Now Find the square root and that's your result:
Exact solution: √242 = 11√2
Aprox solution: 15.5563
Rounded to nearest tenth: 15.6