Question

spunetimi macar la catevaaa va tooog frumooos dau coroana si toate punctele mele

Answer 1

4) < DAB + < ABC = 180

< ABC = 180-65= 115

5) < ADB = 45°,< DAB= 90°, rezulta ∆ ADB dreptunghic isoscel, AD= AB = 7

< ADC = < ADB+< BDC = 45+15= 60

∆ ADC dreptunghic in A, rezta < ACD = 30

rezulta AD = DC/2, DC = 2 AD = 2*7= 14

6) V cub = 10^3= 1000 cmc

1 dmc = 1 l (1 decimetru cub = 1 litru)

1 dmc = 1000 cmc

V cub= 1000 cmc= 1 dmc = 1 l