In the figure, two circles cut at A and B. P and Q are the centres of the circles. If <APB=90 and <AQB=60 then find the area of the shaded portion if AP=4cm.

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- Feb 1st 2010, 08:14 AMsnigdhaCircles
In the figure, two circles cut at A and B. P and Q are the centres of the circles. If <APB=90 and <AQB=60 then find the area of the shaded portion if AP=4cm.

- Feb 1st 2010, 11:33 AMbjhoppercircles
posted by snigdha

AP=4 given

AB=4times radical 2 property of 90 deg triangle with equal legs

AQ= AB property of equilateral triangle

Calculate the area of the two defined triangles.

Calculate the two sector areas.

Calculate the two segment areas.

It is downhill from there on.

bjh