Baholash
\frac{40\pi }{9}\approx 13,962634016
Baham ko'rish
Klipbordga nusxa olish
2\pi \times \frac{800}{360}
800 hosil qilish uchun 10 va 80 ni ko'paytirish.
2\pi \times \frac{20}{9}
\frac{800}{360} ulushini 40 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.
\frac{2\times 20}{9}\pi
2\times \frac{20}{9} ni yagona kasrga aylantiring.
\frac{40}{9}\pi
40 hosil qilish uchun 2 va 20 ni ko'paytirish.
Misollar
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