The sum of a 3 digit number and a 1 digit number is 217. the product of the numbers is 642. if one number is between 200 and 225, what are the numbers ?

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?

Acircle has a circumference of 28.36 units what is the diameter of the circle

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?