find the length of the line with the end point (3,5) & (6,3)

Question

length of a line,l=(x2-x1)2+(y2-y1)2                                                                                                                     find the length of thelines,with the end point (3,5) & (6,3) to 0ne decimal place.

Answer 1

distance formula is sqrt[(x2-x1)^2+(y2-y1)^2]

p1(3,5), p2(6,3)

sqrt[(6-3)^2 + (3-5)^2]

sqrt(3^2 + (-2)^2)

sqrt(9+4)

sqrt(13) equals approximately 3.6