Răspuns:
Explicație pas cu pas:
L=5dm+2x+2y
x=20dm:8dm=2,5dm
y=7x6dm=42dm L=5dm+5dm+84dm=94dm
l=9y-3x+4dm
x=57,6:2,4=24 dm
y=60:5=12dm l=9x12-3x24+4=108-72+4=40 dm
h=15/7x+15/7y=15/7(x+y)
x=122:10=12,2 dm
y=4x0,45=1,8 dm h=15/7(12,2+1,8)=15/7x14=30 dm
