 More circles, arcs and sectors
I don't usually struggle with maths, but if anybody could help me, it would be appreciated again!
The length of an arc of a circle is 12cm. The corresponding sector area is 108cm squared. Find:
a) the radius of the circle.
b) the angle subtended at the centre of the circle by the arc.
See attached and check if I have drawn the correct diagram.
Help is much appreciated again,
Thanks
D Loizou |