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Re: Circumference of the circle with center O [#permalink]
alex007 wrote:
suhaibwahla wrote:
lets consider radius is 4= so diameter is 8. [u]diameter is the largest chord in a circle and it passes through the centre of the circle. under this rule, the circumference is 8*3.14=25.12
now as ab is the is the diameter , it will be 8 and other two chords must be less than diameter. we can use 7.99 as the length of each small chords.
so 7.9+7.9+8=23.8
hence A is greater


Thank you for your perfect explanation!!

However, when it says "lengths of chords", does not it mean curved line length? not straight line?




no. "lengths of chords", means a line connecting two points within circle and it does not mean a curved one.
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Re: Circumference of the circle with center O [#permalink]
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The question posted on the board must follow the rules

here how to format in one single step, very easy, the question and how to set up the timer

Next time, sorry, the post will be locked

https://gre.myprepclub.com/forum/how-to-po ... 12752.html

Take a look at the first post how it looks like.

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Re: Circumference of the circle with center O [#permalink]
let us say each chord passes through center which it the longest possible value for any chord inside a circle
so the sum of the lengths is 3*D ,D is diameter
the circumference is equal to phi * D
phi>3
so the answer is always A
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Re: Circumference of the circle with center O [#permalink]
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