Question

exercițiile 3,4,5 va rog

Answer 1

$3.(6+7+5):3=18:3=6=>A.6$

$4.P = 12 \: cm$

$P = 4l$

$4l = 12 = > l = \frac{12}{4} = 3 \: cm$

$A = {l}^{2} = {3}^{2} = 9 \: {cm}^{2}$

$= > D.9$

$5. | - 3| + | - 5| \times 2 - [1.72]$

$= 3 + 5 \times 2 - 1$

$= 3 + 10 - 1$

$= 13 - 1$

$= 12$

$= > C.12$