Question

Am nevoie rapid dau de toate pls ex 14 si 15

Answer 1

Explicație pas cu pas:

14. a) L = 25 m ; l = 14 m ; P = 2 × (25 + 14)

= 2 × 39

= 78 m

b) L = 4.6 dm ; l = 2.4 dm ; P = 2 × (4.6 + 2.4)

= 2 × 7

= 14 dm

c) L = 14.5 cm ; l = 5.2 cm ; P = 2 × (14.5 + 5.2)

= 2 × 19.7

= 39.4 cm

15. L = 27.84 cm ; l = 27.84÷4 = 6.96 cm ;

P = 2 × (27.84 + 6.96)

= 2 x 34.8

= 69.6 cm