1. (97-9-105) ab vatar LI yoyni tortib turadi. Ab ga doiraning o markazidan od perpendikulyar tushirilgan nisbatni hisoblang

Yechish: Radiusi ga teng aylana yoyiga mos kelgan markaziy burchak bo'lsin.

U holda bu yoy uzunligi ga teng. Radiusi ga teng bo'lgan aylana uzunligi esa ga teng. Masalaning shartiga ko'ra birinchi aylana yoyining uzunligi ikkinchi aylananing uzunligiga teng. . Bu yerdan ekanini topamiz. J: (C)

1. (96-3-46) Aylananing markaziy burchagi , u tiralgan yoy uzunligi 10 sm bo'lsa, aylananing radiusi necha sm ( deb olinsin)?
A) B) C) D) E)
2. (96-11-47) Aylananing markaziy burchagi , u tiralgan yoy uzunligi 15 sm bo'lsa, aylananing radiusi necha sm?
A) B) C) D) E)
3. (96-12-49) Aylananing markaziy burchagi , u tiralgan yoy uzunligi 10 sm bo'lsa, aylananing radiusi necha sm?
A) B) C) D) E)
4. (97-12-28) Uzunligi ga teng bo'lgan aylananing li yoyini tortib turuvchi yoy uzunligi qancha?
A) B) C) D) E)
5. (98-8-43) Aylananing uzunligi radiusi 4 ga, marka-ziy burchagi ga teng yoy uzunligiga teng. Aylananing radiusini toping.
A) B) C) D) E)
6. (98-11-28) Radiusi 8 ga teng aylananing radianga teng bo'lgan yoyining uzunligini aniqlang.
A) B) C) D) E)
7. (99-8-57) Uzunligi ga teng bo'lgan aylana, radiusi 20 ga teng bo'lgan yoy shakliga keltirilgan. Hosil bo'lgan yoyning markaziy burchagini toping.
A) B) C) D) E)
8. (00-10-24) Radiusi 32 ga teng bo'lgan aylananing radianga teng yoyining uzunligini aniqlang.
A) B) C) D) E)
9. (97-9-48) Radiusi 1 ga teng aylana uchta yoyga bo'lingan. Ularga mos markaziy burchaklar 1, 2, va 3 sonlarga proportsional. Yoylardan eng kattasining uzunligini toping.
A) B) C) D) E)
10. (99-8-56) Radiuslari orasidagi burchagi va radiusi uzunligi 5 ga teng bo'lgan sektor yoyining uzunligini toping.
A) B) C) D) E)
11. (01-5-46) Aylananing uzunligi ga teng. Uzunligi uning li yoyiga teng bo'lgan aylananing radiusini toping.
A) B) C) D) E)
12. (01-8-35) Aylana yoyining uzunligi aylana uzunligining % ga teng. Shu yoyga tiralgan markaziy burchakni toping.
A) B) C) D) E)
13. (02-3-61) Radiusi 12 ga va markaziy burchagi ga teng bo'lgan doiraviy sektorning yoyi aylana shakliga keltirilgan. Shu aylananing radiusini aniqlang.
A) B) C) D) E)