The figure shows a sector with rasius 16 cm and chord AB=12 cm.
(a) Find the area of triangle OAB.
(b) Find

Question

The figure shows a sector with rasius 16 cm and chord AB=12 cm.
(a) Find the area of triangle OAB.
(b) Find <AOB. Hence find the area of the shaded region.

anonymous · Answer

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anonymous · Answer

@terenzreignz @Callisto @goformit100 @Meepi

anonymous · Answer

Ok. so the first drop a perpendicular from O to AB.

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Since a perpendicular line drawn from centre to the chord bisects the chord, 

AC = CB = 6 cm. 

Now in triangle OCA, AC = 6cm and OA = 16 cm.

I'll show further working in next comment -