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31 Jul 2017, 07:46
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The length of an arc of a circle is twice the length of the radius. Find the angle subtended by the arc at the centre of the circle in degrees and minutes
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31 Jul 2017, 07:57
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The length of an arc of a circle is twice the length of the radius. Find the angle subtended by the arc at the centre of the circle in degrees.
length of an arc = x/360*2*pi*r
Given, length of arc = 2r
therefore, 2r=(x/360)*2*22/7*r
hence, x = 114.1 degrees
length of an arc = x/360*2*pi*r
Given, length of arc = 2r
therefore, 2r=(x/360)*2*22/7*r
hence, x = 114.1 degrees
31 Jul 2017, 08:08
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The length of an arc of a circle is twice the length of the radius. Find the angle subtended by the arc at the centre of the circle in degrees and minutes
few points..
1) Q is not GMAT type - pattern or otherwise..
2) pl post Q properly.
3) it is not TOO hard
4) no one will ask you degree and minutes
your query..
radius is r
circumference or 2*pi*r makes an angle 360 at centre ..
2r will make an angle 360/pi= 360*7/22 nearly equal to 114 degree....
