7- sinflar uchun online olimpiada testlari

A) B) C) 11 D)

12. Uchburchakning perimetri 48 sm, tomonlaridan biri esa 18 sm ga teng. Agar qolgan ikkita tomonining ayirmasi 4,6 sm bo’lsa, shu tomonlarni toping.

A) 12,7 sm; 17,3 sm B) 12,7 sm; C) 17,3 sm D) 13 sm; 17 sm.

13. sonining eng katta tub bo`luvchisini toping.

A) B) C) D)

14. Uchburchakning bir tomoni , ikkinchi tomoni birinchisidan ga katta, uchinchi tomoni esa ga teng. Uchburchakning perimetrini toping.

A) B) C) D)

15. Uchburchakning barcha tashqi burchaklarining yig`indisini toping.

A) B) C) D)

16. To’g’ri to’rtburchakning bo’yi enidan ikki marta katta. Agar to’g’ri to’rtburchakning bo’yi 4 m ga, eni esa 5 m ga uzaytirilsa, uning yuzi 111 m² ga ortadi. To’g’ri to’rtburchakning bo’yi va enini toping.

A) 12 sm; 6 sm B) 7 sm; 14 sm C) 6,5 sm; 13 sm D) 7,5 sm; 15 sm

17. 4ta to`g`ri chiziq tekislikni ko`pi bilan nechta qismga ajratishi mumkin?

A) 6 ta B) 8 ta C) 9 ta D) 11 ta

18. ∆ABC uchburchakning A va C uchlaridan tushirilgan balandliklar K nuqtada kesishadi. Agar A=60⁰ va C=72⁰ bo’lsa, AKC ni toping.

A) 132⁰ B) 134⁰ C) 48⁰ D) 12⁰

19. Hisoblang:

A) 1500 B) 0 C) 150 D) 1

20. Agar bo’luvchi x-6 ga, bo’linma x-4 ga va qoldiq -9 ga teng bo’lsa, bo’linuvchini toping.

A) B) C) D)