3)
4)
5)
A) 1;4;5 B) 1;3;5 C)1;2;4 D) 1;4;5 E) 2;4;5
To’g’ri burchakli uchburchakning balandligi gipotenuzani 5 va 20 ga teng kesmalarga ajratadi. Shu balandlikni toping.
A) 10 B) 20 C) D) E)
Quyidagi tasdiqlarning qaysilari to’g’ri.
1) uchburchakka tashqi chizilgan aylananing radiusi (uchburchakning tomonlari, -uchburchakning yuzi) formula bilan hisoblanadi;
2) radiusi ga, markaziy burchagi ga teng doiraviy sektorning yuzi formula bilan hisoblanadi;
3) tomoni ga, burchaklaridan biri ga teng rombning yuzi formula bilan hisoblanadi;
4) dioganallari
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