Given (dimensionless) and (dimensionless)

PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

Given

a = 4.0 \pm 0.2

(dimensionless) and

b = 9.0 \pm 0.1

(dimensionless), find the percentage uncertainty in

z = (ab^{2})^{1/3}