Chapter 1 - Measurement and Problem Solving - Learning Path Questions and Exercises - Exercises - Page 28: 12

The equation $V=\pi d^3/4$ is dimensionally correct.

Given equation for sphere volume - $V=\pi d^3/4$. LHS - volume, $V$ has a SI unit $m^3$. RHS - $\pi$ is a dimensionless constant, and $d$ has a SI unit $m$. We have units of $m^3$ on both sides of the equation. Thus, the equation is dimensionally correct.