The radius of a circle is half the diameter. So if the diameter is 5cm, the radius would be 2.5cm.
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Oh, what a happy little question! If the diameter of a circle is 10 cm, we can find the radius by simply dividing the diameter by 2. So, the radius would be 5 cm. Just imagine that circle sitting there, perfectly balanced and ready for some happy little trees.
The radius of a circle is half of its diameter
1/2 of the diameter
The diameter of a circle is twice its radius. Thus the radius of a circle is half its diameter. → a circle with a diameter of 15 cm has a radius of 15/2 cm = 7.5 cm
7cm; the diameter of a circle is twice its radius.