Question

If the ratio of radius of two circles is 2 : 5, the ratio of their circumference is​

Answer 1

Answer:

answer for the given problem is given

Answer 2

$\huge\sf\pink{Answer}$

☞ Ratio of Circumference will be 2:5

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$\huge\sf\blue{Given}$

✭ Ratio of the radius of two circles is 2:5

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$\huge\sf\gray{To \:Find}$

◈ The Ratio of their circumference

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$\huge\sf\purple{Steps}$

So here let us consider the radius of the circles as

◕ $\sf r_1 = 2$

◕ $\sf r_2 = 5$

So we know that,the circumference of a circle is given by,

$\underline{\boxed{\sf Circumference = 2\pi r}}$

So, then circumference of the circle with radius $\sf r_1$ will be,

➝ $\sf 2 \pi r_1$

And the circumference of circle with $\sf r_2$ will be,

➝ $\sf 2 \pi r_2$

Then their ratio will be,

➢ $\sf \cancel{2\pi} r_1 : \cancel{2\pi}r_2$

➢ $\sf r_1 : r_2$

➢ $\sf\orange{Ratio = 2:5}$

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