7- sinflar uchun online olimpiada testlari
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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) Download 15.89 Kb. Do'stlaringiz bilan baham: |
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