Is 37 a prime or composite number

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?

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?