The radius of the circle is 2.5. Find its diameter. Can its chord be 6 cm?

Since the diameter of the circle is twice the radius, then D = 2 * R = 2 * 2.5 = 5 cm.

The chord of the maximum circumference is the same as the diameter of the circle, so it cannot be 6 cm long.

Answer: The diameter is 5 cm. The chord cannot be 6 cm long.



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