If the radius of a sphere is made five times, what will be the ratio of the volume of new sphere to the ratio of volume of original sphere?

If the radius of a sphere is made five times, what will be the ratio of the volume of new sphere to the ratio of volume of original sphere? Correct Answer 125:1

Let the radius of original sphere = r Volume of original sphere = (4 / 3) * πr3 Radius of new sphere = 5r Volume of new sphere = (4 / 3) * π * (5r)3 = (4 / 3) * 125πr3 Ratio = Volume of new sphere / Volume of original sphere = ((4 / 3) * 125πr3) / ((4 / 3) * πr3) = 125:1
Volume and Surface Area Spheres and Hemispheres
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