# What is the diameter of the circle if the radius is 5mm, 16cm, 9dm, 10m?

January 29, 2021 | education

| It is known that the radius is the distance from the center of the circle to any point on the circle. Then the diameter of the circle is D = 2 * R.

The radius of the first circle is R = 5 mm. Then the diameter of the circle is D = 2 * 5 = 10 mm.

The radius of the second circle is R = 16 cm. Then the diameter of the circle is D = 2 * 16 = 32 cm.

The radius of the third circle R = 9 dm. Then the diameter of the circle D = 2 * 9 = 18 dm.

The radius of the fourth circle is R = 10 m. Then the diameter of the circle is D = 2 * 10 = 20 m.

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