"rectangle en L" --> hypoténuse = KM .
2°) Pythagore dit LM² + KL² = KM² --> LM² + 7,5² = 8,5² --> LM² + 56,25 = 72,25 --> LM² = 16 --> LM = 4 cm .
3°) Aire KLM = base x hauteur / 2 = 7,5 x 4 / 2 = 15 cm² .
mais on a aussi LN x KM/2 = 15 donc LN x 8,5 = 30
d' où LN = 30/8,5 = 60/17 cm ( ≈ 3,53 cm ) .
Conclusion : tu as grave décontenancé un éventuel lecteur au début, cela peut arriver à tout le monde !
Bon courage à Toi pour le reste !
So I think that I lead a healthy life because expect in the lockdown I do sport almost every day. Monday I have one hour of EPS and also I'm doing rugby for extract school activities, Tuesday I have one hourand a half of basketball, wesneday I have one hour of tennis and thursday two hours of E.P.S. I also heat healthy I think most of the time I take my breakfast when I wake up. After for my lunch it's depend if I'm at school or not. When I eat at school I eat at 12:30 pm and at home around 1:30pm. For my dinner it's around 7:45 pm when I have school the next day or 8:15 when I don't have school. I don't have a fix menu but I think that most of the time I eat healthy .
Ca c est ma reponse personelle mais tu peux me donner ton texte en francais et je peux le mettre en Anglais