If the ratio of the area of a sector to the area of the circle is 3: 5, What is the ratio of the length of the arc in the sector to the circumference of the circle?

If the ratio of the area of a sector to the area of the circle is 3: 5, What is the ratio of the length of the arc in the sector to the circumference of the circle? Correct Answer 3/5

আমরা জানি, বৃত্তকলার ক্ষেত্রফল = θ360πr2 বৃত্তের ক্ষেত্রফল = πr2 শর্তমতে, θ360πr2:πr2 = 3:5⇒ θ360πr2πr2 = 35⇒θ360 = 35 .:. বৃত্তকলার দৈর্ঘ্য ও বৃত্তের পরিধির অনুপাত =  θ360×2 πr2 πr = θ360 = 35
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