2_5458386783010031042

6-sinf matematika “aylananing uzunligi va doira yuzi” tuzuvchi :namangan viloyati pop tuman xtb ga qarashli 37-sonli umumta’lim maktabi matematika fani o‘qituvchisi kadirova gulyora o`ktamjonovna 1 s aylana uzunligi va doira yuzi aylana uzunligi r o d d=2r c-aylana uzunligi r-radius d-diametr o-markaz c=2πr=πd π=3.1415926... c:π=2r=d qoida aylana uzunligini topish uchun uning diametrini π soniga ko`paytirish kerak masala ; r o masalada berilgan; r=7sm c=? c=2πr c=2·3.14·7 c=6.28·7 6.28 7 ———— 43.76 javob ; 43.76 sm yechish masala ; d=3 sm c=? c=πd c=3.14·3 c=9.42 javob; 9.42 yechish doira yuzi. o s r s=π·r² s-yuza masala ; d=4 sm s=? d=2r yechish s=π·r² 4=2r r=4:2 r=2 s=π·2² s=3.14·4 s=12.56 javob ;12.56 sm ² masala ; s=50.24 m² r=? s=π·r² yichish 50.24= …

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