To calculate the volume of Kairay's sculpture, we first need to find the volume of the larger hemisphere and then subtract the volume of the smaller hemisphere that was removed.
The volume of a hemisphere can be calculated using the formula:
V = (2/3) * π * r^3
For the larger hemisphere with a radius of 20 inches:
V1 = (2/3) * 3.14 * (20)^3
V1 ≈ 33,493 in^3 (rounded to the nearest whole number)
For the smaller hemisphere with a radius of 15 inches:
V2 = (2/3) * 3.14 * (15)^3
V2 ≈ 14,137 in^3 (rounded to the nearest whole number)
To find the volume of Kairay's sculpture, subtract V2 from V1:
Volume of sculpture = V1 - V2 = 33,493 in^3 - 14,137 in^3 = 19,356 in^3
Therefore, the volume of Kairay's sculpture is approximately 19,356 inches cubed.