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what is the "length" of a semi-circle?

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Re: what is the "length" of a semi-circle?

by logitech » Tue Jan 06, 2009 9:12 am
teekayy wrote:what does the "length" refer to? I assumed it was the diameter.
Diameter + Half of the perimeter = D + Pir ( since D=2r )

Lenght of semi circle is = D+Dpi/2 = D(pi/2+1)
Last edited by logitech on Tue Jan 06, 2009 6:02 pm, edited 1 time in total.
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Re: what is the "length" of a semi-circle?

by teekayy » Tue Jan 06, 2009 11:49 am
logitech wrote:
teekayy wrote:what does the "length" refer to? I assumed it was the diameter.
Diameter + Half of the perimeter = D + 2Pir ( since D=2r )

Lenght of semi circle is = D+Dpi = D(pi+1)

Half of the perimeter = 2Pir? Is it half the perimeter of the semi-circle or a full circle?
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Posts: 2134
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Re: what is the "length" of a semi-circle?

by logitech » Tue Jan 06, 2009 6:01 pm
teekayy wrote:
logitech wrote:
teekayy wrote:what does the "length" refer to? I assumed it was the diameter.
Diameter + Half of the perimeter = D + 2Pir ( since D=2r )

Lenght of semi circle is = D+Dpi = D(pi+1)

Half of the perimeter = 2Pir? Is it half the perimeter of the semi-circle or a full circle?
True. I edited my earlier post. Thanks for catching my "silly" mistake.
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