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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