" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
P=r*p
P=2*1/2*(a+12+c)
a+c+12=6a
5a-c=12⇒c=5a-12
a²+12²=c²
(5a-12)²=a²+144
25a²-120a+144=a²+144
24a²-120a=0 /:24a, a>0
a-5=0
a=5
c=5*5-12=13
Ob=5+12+13=30