geometry
posted by Debbie .
If the sides of a triangle are in the ratio 3:4:5 and the perimeter of the triangle is 72 inches what are the lengths of the sides?

3x+4x+5x=72
solve for x, then you have it. 
Thank you! That was a fast answer! What if it was angles? The angles of a triangles have the ratio 3:4:5  would you say that 3x + 4x + 5x = 180 and then solve for x?

Yes, that would give you the angles, once you have solved for x, which is 15 degrees in this case.

Thank you so much!