Physics (Old) International Baccalaureate (IB) Practice Question: 1. A student measures the radius r of a sphere with an absolute uncertainty Δr. What is the fractional uncertainty in th...

${\left( {\frac{{\Delta r}}{r}} \right)^3}$

${3\frac{{\Delta r}}{r}}$

${4\pi \frac{{\Delta r}}{r}}$

${4\pi {\left( {\frac{{\Delta r}}{r}} \right)^3}}$