Question

Calculate the distance between the points P=(-9, 1) and C=(−6, 8) in the coordinate plane.

Answer 1

Using Pythagoras
Distance between P and C = sr[(-6 - -9)^2 + (8 - 1)^2]
= sr(3^2 + 7^2)
= sr(9 + 49)
= sr(58) exactly