The distance between the two points would be the square root of 40. Hope this helped!

C(5,4)   D(3,10) CD = √[(x₂-x₁)² + (y₂-y₁)²] CD = √[(3-5)² + (10-4²)] CD = √[(-2)² + (6)²] CD = √[(4) + (36)] CD = √40 = 2√10 = 6.3246