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Mayur Sand
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Circle
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Source: Beat The GMAT — Problem Solving |
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tohellandback
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sreak1089
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I know length of the arc is missing here. Assuming the length of the arc to be (l), I will try to solve the problem as below:
1) I find the length of the minor arc:
From the lenght of the arc, I can find out whether its a minor arc or major arc. If what is given is major arc, then length of the minor arc == (length of the circumference - length of the major arc)
2) (Lenght of the minor arc / length of the semi-circle) = (length of the chord) / (diameter)
=> length of the chord = (diameter * length of the minor arc) / (length of the semicircle)
i.e., l = (2r *l) / (pie * r)
Is the above approach correct to solve this problem?
1) I find the length of the minor arc:
From the lenght of the arc, I can find out whether its a minor arc or major arc. If what is given is major arc, then length of the minor arc == (length of the circumference - length of the major arc)
2) (Lenght of the minor arc / length of the semi-circle) = (length of the chord) / (diameter)
=> length of the chord = (diameter * length of the minor arc) / (length of the semicircle)
i.e., l = (2r *l) / (pie * r)
Is the above approach correct to solve this problem?
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Mayur Sand
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iam sorry but when i was solving this question this is what i got in statement . It will great if some one can complete it
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PussInBoots
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