Question

PLS ! AJUTOOOOOR VA ROG ! AM NEVOIE ! URGENT MACAR DE O PROBLEMA DINTRE 3 SI 4. VA ROOOG FRUMOS AJUTOR !

Answer 1

Problema 3)  a)   Larc = π R * x ° / 180 °
L AB = πR * m (AOB) ° / 180 °  
2 = πR * 30 ° / 180 °  
R = 12 / π

m (BOC) = L BC * 180 ° / πR = 5 * 180 ° / (12π / π) = 900/12 =  75 °
m (COD) = L CD * 180 ° / πR = 6 * 180 / (12π / π) = 1080-1012 =  90 °

b) R = 12 / π = 12 / 3,14 = 3,82 cm  

c) m (TOC) = 360 m (ABO) -m (BOC) -m (COD) = 360-30-75-90 = 165 °  
L AD = πR * m (TOC) / 180 ° = [(12π / π) * 165] / 180 = 1980/180 =  11cm