To determine the difference between the volumes of the waxes used for each of the mold, we calculate for the volume of each of the mold.
Cylindrical mold:
V = πr²h
where V is volume, r is radius, and h is height.
Substituting the known values:
V = π(2 in)²(4 in)
V = 16π in³ = 50.26 in³
Spherical mold:
V = 4πr³/3
Substituting the radius to the equation,
V = 4π(2 in)³ / 3
V = 32π/3 in³ = 33.51 in³
The difference is calculated below:
D = 50.26 in³ - 33.51 in³
D = 16.76 in³
Hence, the answer is the first choice.
