The length of the longest chord of the circle is 9 cm then find the length of the diameter.

6 cm

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18 cm

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9 cm

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20 cm

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Solution

The correct option is C
9 cm

AB is the longest chord of the circle in a circle, the longest chord is the diameter. Hence, if the length of longest chord is 9 cm, then the length of the diameter = 9 cm.

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