A sculptor is joining together pieces of marble to create a sculpture. it is a triangular sculpture with a perimeter of 86 centimeters. The third side is four less than the first side. The second side is one-half of the first side. find the lengths of all three sides.

Solution:

The lengths are x,1/2x, x-4

So

x+1/2x+x-4=86

x=36

So the lengths are 36,18,32