Question

1) dreptunghi L=10m l=50dm P=? m A=? m²

2) cub l=4 cm
V=? cm ³

3) t1= 8 h 12 Min
t2= 17 h 6 min
durata de timp dintre cele doua

plz dau coroana

Answer 1

1. L = 10 m
    l = 50 dm = 5 m
P = 2 x L + 2 x l = 2 x 10 + 2 x 5 = 20 + 10 = 30 m
A = L x l = 10 x 5 = 50 mp

2. l = 4 cm
V = 4 x 4 x 4 = 16 x 4 = 64 cm cubi

3,ora 8 si 12 min
ora 17 si 6 min
17 h 6 min- 8 h si 12 min = 
sa putem face scaderea luam o ora de la 17 si o transformam in minute
16 h 66 min - 8 h 12 min = 8 h si 54 minute