Question

Calculați perimetrul unui dreptunghi cu dimensiunile:

Answer 1

Explicație pas cu pas:

formula este:

$Perimetrul = 2 \times (lungimea + latimea) = 2 \times (L + l)$

$P = 2 \times (L + l) = 2 \times (18m + 29m) = 2 \times 47m = 94m$

$P=2 \times (15hm + 12dam) =2x(150 + 17)dam = 2 \times 167dam = 334dam$

$P = 2 \times (18 cm+21 mm) = 2 \times (180mm + 21mm) = 2 \times 201mm = 402mm$

$P = 2 \times (18.32dm + 23.15mm) = 2 \times (1832mm + 23.15mm) = 2 \times 1855.15mm = 3710.3mm$

$P = 2 \times (2500m + 1.5km) = 2 \times (2500m + 1500m) = 2 \times 4000m = 8000m$

$P = 2 \times (1km + 6.3hm) = 2 \times (10hm + 6.3hm) = 2 \times 16.3hm = 32.6hm$

Answer 2

Perimetrul este suma tuturor laturilor

P=AB+BC+CD+DA sau P=2(L+l)

a) P=18m+9m+18m+9m

P=54m

c) l=2.1cm

P=18cm+2,1cm+18cm+2,1cm

P=40,2cm

e) l=2,5 km

P=1,5km+2,5km+1,5km+2,5km

P=8km

b) l=1,7hm

P=15hm+1,7hm+15hm+1,7hm

P=33,4 hm

d)l= 0,2315dm

P=18,32dm+0,2315dm+18,32dm+0,2315dm

P=37,283dm

f) l= 10hm

P=6,3+10+6,3+10

P=32,6 hm

Sper ca te-am putut ajuta!!!