6. 2-rasm ko‘ram

k
^nF ^3,141400 ^{4,65 dona, bunda F }₄ ^3,14sm 2 ^.
Ezilishdagi mustahkamlik shartidan


20000

e
^nF_e ^22800 ^{3,64 dona, bunda Fe td 12 2sm} 2^. Bundan ko‘rinadiki 6.5-rasmdagi birikmada parchin mixlarning
sonini kesilish shartidan n = 5 ta deb olish kerak.