Q: What does the radius of a sphere?

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Treat the 3D sphere as a 2D circle. The radius for the sphere is the same radius as for the circle. No matter where on the sphere you place a mark, the distance (radius) from the mark to the centre of the sphere will always be the same as the circle.

The radius of a sphere is 1/2 of its height.

The volume of a sphere with a radius of 13 is: 9,203 units3

The sphere's radius will be 7.973 cm

Radius of sphere is 6 meter.

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The radius of a sphere joins the center of the sphere to its circumference.

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Treat the 3D sphere as a 2D circle. The radius for the sphere is the same radius as for the circle. No matter where on the sphere you place a mark, the distance (radius) from the mark to the centre of the sphere will always be the same as the circle.

The volume of a sphere with a radius of 4cm is about 268cm3

The volume of a sphere with a radius of 2cm is about 33.5cm3

The radius of a sphere is 1/2 of its height.

The volume of a sphere with a radius of 13 is: 9,203 units3

The sphere's radius will be 7.973 cm

Radius of sphere is 6 meter.

The volume of a sphere with a radius of 18 is about 24,429 units3

A sphere with a radius of 7 inches has a volume of 1,436.76 cubic inches.

To work out the area of a sphere, you have to know its radius. Once you know that: -- 'square' the radius (multiply radius times radius) -- multiply that result by 12.5664 The result is near the area of the sphere.