zad.3
1. D-480 bo, P=30•16=480
2.C-1050 bo, P=42•25=1050
3.D-9494. bo, P=94•101=9494
zad.5
a)
P=½•e•f
P=½•6•8=24cm²
b)
P=½•12•5=30dm²
