9-BILET
1. Agar bo'lsa, ning qiymatini toping.
2. Hisoblang:
3. Tenglamani yeching:
4. Ifodani soddalashtiring:
5. To`g`ri to`rtburchakning bir tomoni ga ortirilib, ikkinchi tomon 20% ga kamaytirilsa, uning yuzi qanday o`zgaradi?
6. Teng yonli ABC uchburchakda, va . Shu uchburchakning perimetrini toping?
7. Teng tomonli uchburchak tomonlarining o'rtalari tutashtirilsa, bir-biriga teng bo’lgan 4 ta teng tomonli uchburchak hosil bo’lishini isbotlang.
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