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March 13th, 2013, 09:51 AM   #1
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Perimeter of a Sector

Just a quick question, here. I think the books final answer may be incorrect, but can anyone help me confirm if that is the case.

Many thanks.

Q. The perimeter of a sector of a circle of radius r is 8 cm. Express in terms of r , where is the angle of the sector in radians.

Attempt: Perimeter of a circle:





Answer: (From text book):
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March 13th, 2013, 10:13 AM   #2
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Re: Perimeter of a Sector

[color=#000000]I get the same result, .[/color]
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March 13th, 2013, 10:30 AM   #3
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Re: Perimeter of a Sector

Thanks for checking that.
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