Question

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4. The ratio of circumferences of two circles is 3:4. Find the ratio of their areas.
of a circle is equal to its circumference. Find its radius
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Answer 1

Answer:

When comparing 2 similar figures, the ratio of any corresponding lengths will have the same ratio. So the ratio of the circumferences would also be 3:4. However, the ratio of the circle's areas would be those numbers squared, so the ratio of their areas would be 3²:4² = 9:16.