If the diameter of a circle is 9 cm, then the length of the longest chord is ___.

3 cm

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9 cm

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2 cm

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1 cm

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Solution

The correct option is B
9 cm

In a circle, the diameter is the longest chord of the circle. Hence, if the diameter of the circle is equal to 9 cm, then the length of the longest chord is also equal to 9 cm

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