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प्रश्न
In a circle of diameter 42 cm, if an arc subtends an angle of 60° at the centre, where `pi = 22/7` then length of an arc is ____________.
पर्याय
11 cm
`22/7` cm
22 cm
44 cm
MCQ
रिकाम्या जागा भरा
उत्तर
In a circle of diameter 42 cm, if an arc subtends an angle of 60° at the center, where `pi = 22/7` then the length of an arc is 22 cm.
Explanation:
We have` "r" = 42/1 =21 "cm" and theta = 60^circ `
Length of arc `=theta/360 xx 2pi"r" xx 2 xx 2 xx 22/7 xx 21=22 "cm" `
Hence, the length of the arc of the circle is 22 cm.
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