Kairay created a sculpture by forming a hemisphere with a radius of 20 inches, and then removing a hemisphere with a radius of 15 inches from it, calculate the volume of his sculpture used 3.14 as an approximate for pi round your answer to the nearest whole number
The volume of the larger hemisphere is given by the formula V = (4/3) * pi * r^3, where r is the radius. Substituting the given radius of 20 inches, we have V1 = (4/3) * 3.14 * (20)^3 = 33521.33333333333 cubic inches.
The volume of the smaller hemisphere is given by the same formula, but with radius 15 inches. So, V2 = (4/3) * 3.14 * (15)^3 = 14130 cubic inches.
The volume of the sculpture is then V = V1 - V2 = 33521.33333333333 - 14130 = 19391.33333333333.
Rounding to the nearest whole number, the volume of the sculpture is approximately 19391 cubic inches.