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# C2 finding area of a sector watch

1. The diagram shows two circles, each of radius 4cm, with each one passing through the centre of the other. Calculate the shaded area. (Hint: add the common chord AB to the sketch)

"Common chord" - a line between the to points where the paths of the two circles meet.
Help please - I presume you have to find theta. Can someone explain to me how you do this?
The diagram shows two circles, each of radius 4cm, with each one passing through the centre of the other. Calculate the shaded area. (Hint: add the common chord AB to the sketch)

"Common chord" - a line between the to points where the paths of the two circles meet.
Help please - I presume you have to find theta. Can someone explain to me how you do this?
This post belongs in the Maths forum I've asked for it to be moved there

We can't see the shaded area - please could you post a picture of the question if possible?

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