Aylana radiusi 18mm uning diametrini toping.(mm), , , , , Radiusi 40mm bo'lgan aylananing uzunligini toping.(sm), 2 pi, 8 pi, 16 pi, 4 pi, Aylana radiusi 6 marta kamaytirilsa shu aylana uzunligi qanday o'zgaradi?, 3 marta ortadi, 6 marta kamayadi , 6 marta ortadi, o'zgarmaydi, Uzunligi 30 ga teng bo'lgan 60 gradusli yoyni tortib turuvchi yoy uzunligini toping , 12, 6, 5, 3, Aylananing markaziy burchagi 100 gradusli u tiralgan yoy uzunligi 10sm bo'lsa,aylananing radiusi necha sm?(pi=3), 6, 16, 3, 13, Doira diametri 7sm uning radiusini toping., 14, 20,4, 9, 3,5, Diametri 3,6dm bo'lgan doira yuzini toping., 32.4 pi, 7 pi, 14 pi, 3,24 pi, Doiraning radiusi 20 foizga kamaytirilsa,uning yuzi necha foizga kamayadi?, 25, 36, 45, 40, Uzunligi 31,4sm ga teng bo'lgan aylana radiusini toping , 25, 10, 26, 5, Radiusi 10sm bo'lgan doiraning chorak qismi(ya'ni 90 gradusli sektor) yuzini toping ., 25 pi, 15 pi, 33 pi, 22 pi.

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