Maharashtra State BoardSSC (English Medium) 9th Standard
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Find the Following Ratios (I) the Ratio of Radius to Circumference of the Circle. - Algebra

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Sum
Find the following ratio.
The ratio of radius to circumference of the circle.
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Solution

Let the radius of the circle be r units.
∴ Circumference of the circle = 2πr units
Radius of the circle : Circumference of the circle = r : 2πr = `r / (2πr) = 1/ (2π) = 1 : 2π`
Thus, the ratio of radius to cirumference of the circle is 1 : 2π

Concept: Concept of Ratio
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APPEARS IN

Balbharati Mathematics 1 Algebra 9th Standard Maharashtra State Board
Chapter 4 Ratio and Proportion
Practice Set 4.2 | Q 2.1 | Page 63
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