1) Berilgan aylanaga ichki chizilgan muntazam o’n ikki burchakni yasashni tushuntiring.
2) Tomoni 12 sm bo’lgan muntazam uchburchakka ichki chizligan aylana uzunligini toping.
3) Markaziy burchagi 1500 ga teng, radisusi 18 sm bo’lgan:
- a) aylana yoyining uzunligini;
- b) yoyi 1500 li sketorning yuzini;
- d) yoyi 1500 li segmentning yuzini toping.
4) Ushbu yarim doira bo’yalgan qismining yuzi N ga teng,
BC yoyning gradus o’lchovi 600 ga , CD yoyning
gradus o’lchovi esa 300 ga teng. To’liq doiraning
yuzini toping.
Ko’chirib olish: 9-sinf, Geometriya . 7-nazorat ishi.
kun masalalari tushunarsiz, qandaydir ko’rinarli tus brish kerakmi?