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The formula for surface area (A) of a sphere, radius "r", is A=4*pi*r2
The formula for volume (V) of a sphere, radius "r", is V=4*pi*r3/3
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Use the formula for volume to solve for the radius of the sphere and then plug that radius into the formula for the surface area of a sphere.
A sphere with a volume of 50 units3 has a radius of 2.29 units. A sphere with twice the radius (4.58 units) has a volume of 402 units3.
The formula for the volume of a sphere is based on the radius of the sphere. It is equal to 4/3 multiplied by pi, multiplied by the radius cubed.
4/3*pi*r3 = 30 cubic units Make r the subject of the formula in order to find the radius: radius = 1.92757321 units 2*radius =3.85514642 Volume = 4/3*pi*3.855146423 = 239.9999998 or 240 cubic units
Use this formula when the radius is known: V = 4/3(PI*r3)