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Q: What is the volume of a circle if its radius equals 4?

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A circle has no volume; it is a 2D shape. If you mean a sphere, then the formula is V = (4/3)πr3 where V is volume, π is pi (~3.14) and r is radius.

if a radius is 5cm the diameter is 10cm rule- you double the radius

8 units; the diameter of a circle is twice its radius.

4 cm radius = Area of 50.26548 sq. cm.

Length of a radius is always half the diameter of a circle. This means that the circle has a radius of 2cm.

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A = 50.27 square units.

If that equals 16 then the radius is 4

4

The volume of the cylinder is 603.186

The area of a circle is 'pi' multiplied by the square of the circle's radius.The volume of a circle is zero.The volume of a sphere is (4/3 pi) multiplied by the cube of the sphere's radius.

The area of a circle is 'pi' multiplied by the square of the circle's radius.The volume of a circle is zero. The volume of a sphere is (4/3 pi) multiplied by the cube of the sphere's radius.

The area of a circle is 'pi' multiplied by the square of the circle's radius.The volume of a circle is zero. As a circle has only two dimensions.The volume of a sphere is (4/3 pi) multiplied by the cube of the sphere's radius.

If by circle you mean sphere, then the volume of a sphere is: 4/3 * pi * radius^3. If you already know the volume, then here's what you do: 1. Multiply the volume by 3/4. 2. Divide the volume by pi. 3. Take the cube root of both sides In other words, the formula for radius when volume is known is: ( ( Volume * 3 ) / ( 4 * pi ) ) ^ (1/3)

The formula for the volume of any sphere isVolume = ( 4/3 pi ) x (cube of the radius)

The radius of a circle with diameter or 8 inches is 4 inches. The diameter equals 2 times the radius or d=2*r. --> 8 in = 2*r so, r = 4 in

Circles do not have volume because they are 2 dimensional. The area of a circle is PI*r2 . A sphere has volume and the volume of a sphere is 4/3*pi*r3 where r is the radius.

no because the radius is half the diameter so it must be multiplied by two in order to find the diameter of that circle which is 4 times 4 equals to 8 so the circle which has a diameter of 5 inches is much to small for a circle with a radius of 4 inches to fit.

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