If a+b+c=10, ab+bc+ca= 24, a^2+b^2+c^2=?

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

Me with this one question, and i'll upvote the brainliest answer

Which of the following shows the length of the third side, in inches, of the triangle below