" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a²+12²=13²
a²+144=169
a²=169-144
a²=25 |√
a=5
P= (a+b)h/2
P=(30+20)12/2
P=50*6
P=300
odp: Ppole trapezu wunosi 300 cm:)