In the given figure, DiameterAB and a chord AC have acommon vertex. If

1.	In the given figure, DiameterAB and a chord AC have acommon vertex. If thelength of AB=20 cm. andAC = 12 cm. How far is ACfrom the centre of the circle?
Answer» ANSWER: Diameter of the CIRCLE =20cm so, radius will be 10cm AC=12cm. so,AD =6cm. (perpendicular drawn from the centre of the circle BISECTS the CHORD) By Pythagoras theorem on ∆ADO AO²=AD²+OD² SO, OD=√100-36=√64=8cm ans

In the given figure, DiameterAB and a chord AC have acommon vertex. If thelength of AB=20 cm. andAC = 12 cm. How far is ACfrom the centre of the circle?

Answer»

Diameter of the CIRCLE =20cm so, radius will be 10cm

AC=12cm.

so,AD =6cm. (perpendicular drawn from the centre of the circle BISECTS the CHORD)

By Pythagoras theorem on ∆ADO

AO²=AD²+OD²

SO, OD=√100-36=√64=8cm ans