A  triangle has two sides of length  13  and  10.  what is the largest possible whole-number length for the third  side?

In order for a triangle to exist, the two smaller sides must add to a number greater than the largest side.

So, 13+10 = 23

So, the number has to be smaller than 23, and the largest whole number less than 23 is 22.

22 Is the largest possible whole number.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.