think of it as 2 triangles, where park st is the base of one and albert st is the base of the other
than find the base using 1km as height and 1.42 km as hypotenuse of albert st triangle
find the base of park st triangle using 2 km as height and 2.84 km as hypotenuse
find the difference between base of park st and base of albert st and you have your answer
