A physical quantity \( A \) is related to four observable \( a, b, c \) and \( d \) as \( A=\frac{a^{2} b^{3}}{c \sqrt{d…

A physical quantity \( A \) is related to four observable \( a, b, c \) and \( d \) as \( A=\frac{a^{2} b^{3}}{c \sqrt{d}} \). The percentage errors of measurement in \( a, b, c \) and \( d \) are \( 1 \%, 3 \%, 2 \% \) and \( 2 \% \) respectively. What is the percentage error in the quantity \( A \) ?