It depends on whether the height remains unchanged or increases in the same proportion as the radius.
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volume is related as radius squared x height soif both radius and height doubled volume increases 2 x 2 x 2 = 8 times
The original volume is multiplied by 27.
The volume is Base x height; the Base area is the same as the formula for a circle - which is proportional to the square of the radius. For example, if you double the radius (or the diameter, or the circumference) of a circle, its area will quadruple.
The formula for the volume of a cylinder is pi*r*r*h. So, substitute 2r for r (double radius) and leave h as it is: pi*(2r)*(2r)*h = 4pi*r*h. Therefore the new volume is four times that of the original volume.
The volume of a cylinder with a height of 16 and radius of 7 is: 2,460 cubic units.