In an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows : $P = \dfrac{a^3b^2}{cd}$. % error in P is
14%
10%
7%
4%
In an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows : $P = \dfrac{a^3b^2}{cd}$. % error in P is