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July 21st, 2012, 12:12 AM   #1
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find area

[attachment=0:1p8raamh]semicicle.jpg[/attachment:1p8raamh]
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July 21st, 2012, 12:51 AM   #2
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Re: find area

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July 21st, 2012, 01:17 AM   #3
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Re: find area

[attachment=0:3qj7s5n3]semicicle.jpg[/attachment:3qj7s5n3]

The triangle is equilateral, hence the area of the circular sector, minus that of the triangle is:



Now, subtract this from the area of the smaller semi-circle:

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