In the diagram,the chord AB is perpendcular to the diameter CD,AB=70cm and CE=25cm.Find
a)the radius of the circle
b)the area of triangle AOB,where O is the centre of the circle.
In the diagram,the chord AB is perpendcular to the diameter CD,AB=70cm and CE=25cm.Find
a)the radius of the circle
b)the area of triangle AOB,where O is the centre of the circle.
ans is:
a)37cm
b)420cm^2
i nid help on how to get the answer.
Have you learnt the Cartesian equation of a circle? (ie x^2 + y^2 = r^2) Or are you studying circle geometry?
In the diagram,the chord AB is perpendcular to the diameter CD,AB=70cm and CE=25cm.Find
a)the radius of the circle
b)the area of triangle AOB,where O is the centre of the circle.
ans is:
a)37cm
b)420cm^2
i nid help on how to get the answer.
Hi Tempq,
Use the property of intersecting chords AE xBE =CE xDE It's very easy then.