Answer:
V = 36π cubic inches.
Explanation:
From the given information:
The volume of the sphere is

Suppose the diameter is represented by P.
i.e P = 2r
and r = P/2
∴

Differentiating both sides;


here;
P = 12
dP = 12.5 - 12
dP = 0.5
∴

= 36π
Thus, the volume is V = 36π cubic inches.