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a fost răspuns

Am nevoie de cel putin 10 plspls

Am Nevoie De Cel Putin 10 Plspls class=

Răspuns :

1) ΔABC; AD ⊥ BC; BC = 20 cm; AD = 12 cm; Aria = ?;
Aria = (baza * h) / 2;
= (20 * 12) / 2;
= 120 cm²;

2) ΔMNP; Aria = 100 cm²; MQ ⊥ NP; NP = 20 cm; MQ = ?;
Aria = (baza * h) / 2;
100 cm² = (20 cm * h) / 2;
100 cm² = 10 cm * h;
h = 10 cm;

3) ΔABC; AD ⊥ BC; BQ ⊥ AC; BC = 6; AD = 8; AC = 10; BQ = ?;
Aria = BC * AD;
= 6 * 8;
= 48;
Aria = BQ * AC;
48 = BQ * 10;
BQ = 4,8 cm;