Question 844455
Memorize Pythagorean triples.  One such triple is 3 4 5, where 5 is the length of the hypotenuse, and 3 and 4 are the lengths of the legs. If 5 is doubled to 10, then double 3 and 4 to 6 and 8.<P>
The lengths of the sides are 6 and 8.