daire alan

Question

O daire merkezi

A teget noktasi

m(BOD)=50

|OA|=6

ve AB dogru parcasi ACD yayinin uzunluguna esit ise tarali alan kac birimkaredir?

Comments

Hocam soru da tarali alan ABD ucgeninde OAC daire dilimi haric bolge

Cevap 5π

m(OAB)=90

ama AOB bulmamiz gerekir ama bulamadim

Answer 1

 

$AB=ACD=12\pi.\frac{a+50}{360}=\frac{\pi.a+50}{30}$

$A(AOB)=\frac{6}{2}.\frac{\pi.a+50}{30}=\frac{\pi.a+50}{10}$ gelir.

$A(OAC)=\frac{6.6.a.\pi}{360}=\frac{a.\pi}{10}$

$A(AOB)-A(OAC)=\frac{\pi.a+50}{10}-\frac{a.\pi}{10}$