" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
P=1/2 ah = 1/2*3*4= 6
P=P1+P2+P3
6=0,5*3r+0,5*4r+0,5*5r
6=1,5r+2r+2,5r
6=6r
r=1
b)
P=1/2 ah = 1/2*5*12=30
P=P1+P2+P3
30=0,5*5r+0,5*12r+0,5*13r
30=2,5r+6r+6,5r
30=15r
r=2