Solution

155245

First name
dino and youcef
School
sydney russell
Country
Age
15

a=3
b=4
c=5
c<6 because 36-6c>0
5 is the only value of c less than 6 that makes a Pythagorean triple
these are the only values that add up to make a perimeter of 12
and 3x4=12 12/2=6