Kairay created a sculpture by forming a hemisphere with a radius of 20 and then removing a hemisphere with a radius of 15 from it, Calculate the volume of his sculpture. Use 3.14 as an approximation for pi. Round your answer to the nearest whole number.
The volume of a hemisphere is given by the formula: (2/3) * pi * r^3
The volume of the removed hemisphere is: (2/3) * pi * 15^3 = 2/3 * 3.14 * 15^3 = 14127
The volume of the sculpture is the volume of the original hemisphere minus the volume of the removed hemisphere:
Volume = (2/3) * pi * 20^3 - 14127 = 33510
Rounding to the nearest whole number, the volume of the sculpture is 33,510.