CIRcles....O....O.....O....O...O..

JEE Advanced 2015 Sample Questions › Class VII-X Mathematics questions › CIRcles....O....O.....O....O...O..

a wire of length 25cm is bent so as to lie along the arc of a circle of did 100cm. the angle subtended at the centre by the arc is....?????
a)Ï€
b)Ï€/2
3)Ï€/4
d)Ï€/8
plzz...show that how u arrived at that answer....
thanks in advance...:)

#Mathematics #Class VII-X Mathematics

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3 Answers

206

Sayantan Hazra ·2013-08-28 06:04:46

Use the formula for length of arc of an circle to find the angle subtended at the centre...........:)

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Astha Gupta i don't that formula.....:(
Upvote·0· Reply ·2013-08-28 22:43:15
Astha Gupta i mean don't knw d formula...
Upvote·0· Reply ·2013-08-28 22:43:34
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206

Sayantan Hazra ·2013-09-02 09:28:17

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Astha Gupta sir..didnt get it...
Upvote·0· Reply ·2013-09-09 10:53:06
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119

Vinayak Agrawal ·2013-10-21 00:24:13

Using the formula,

25=Î¸360*Ï€100
or, 25=5Î¸Ï€18
or,Î¸=25*18*75*22
or, Î¸=31511^Â°

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Vinayak Agrawal I hope its right.
Upvote·0· Reply ·2013-10-21 00:24:46
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