Question 366799
let the equal sides be x cm
the third side
1 1/2 times the equal  side = 3x/2
3 cm short
3x/2  -3 will be the third side.
...
x+x+3x/2-3=28.5 
7x/2  -3 = 28.5
7x/2 = 28.5 +3
7x/2= 31.5
multiply by 2
7x = 63
/7 
x= 9 
x=9 which is the equal side
third side = 9*3/2 - 3
=27/2-3
=13.5 -3
=10.5  is the third side
...
CHECK
9+9+10.5
m.ananth@hotmail.ca