Answer correctly for brainliest and also get a thanks ! Don't answer if you don't know it please !

you would need to use the distance formula for this square root of (x2-x1)^2+(y2-y1)^2
sqrt of (7-5)^2+(10-1)^2
sqrt of 2^2 + 9^2
sqrt of 4+81
sqrt of 85
9.2