is the formula for volume of a sphere.
Now just plug in 3 for r. You should get 36pi
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V = 113.1 units3
The volume of every sphere is 4/3(pi) x (radius)3 .So the volume of your particular sphere is 4/3(pi) x (19)3.
The formula for calculating the volume of a sphere is 4/3 pi r3. If your sphere has a radius of 3 cm, you can expect it to have a volume of about 113 cubic centimeters.
4/3 pi radius^3
The volume of the larger sphere will be 27 times the original. Here's the math: Volume of sphere of radius r is (4/3) x pi x r3 Volume of sphere of radius 3r is (4/3) x pi x (3r)3 or 27r3