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3 years ago

The ratio of the circumferences of two circles 2 : 5. Find the ratio of their areas

1 answer:

5 0

Circumference one = (2R)*pi let that value be 2x
C second = 5x = (2R)*pi * 5 / 2 = (5R)*pi
So Radius one / Radius two = 2 / 5
Area1:Area2=pi(2R)^2:pi(5R)^2=pi(4R^2):pi(25R^2), pi cancel out we get
4R^2:25R^2, now R^2 cancel out and we get ratio of
4:25

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<u>Step-by-step explanation:</u>

The vertex form of a quadratic equation is: y = a(x - h)² + k

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densk [106]

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Step-by-step explanation:

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Applying the above theorem we can say that value of the function when x =-5

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