Kubning hajmi ga teng bo’lsa, uning to’la sirtining yuzini toping?

Yakuniy nazorat N1

1. Kubning hajmi 8 ga teng bo’lsa , uning to’la sirtining yuzini toping?

2. Parallelepepedning bitta uchidan chiquvchi qirralari, mos ravishda, 6 sm, 8 sm va 12 sm. Parallelepiped barcha qirralari uzunliklarining yig’indisini toping?
3. sin75⁰ dagi qiymatini qo’shish formulalaridan foydalanib yeching.
4. To’g’ri burchakli parallelepipedning o’lchamlari 15 m, 50 m va 36 m. Unga tengdosh kubning qirrasini toping.(tengdoshlik hajmga nisbatan tengligini bildiradi)
5. cos bo’lsa, sinα ni qiymatini toping?