In an experiment, the following observations were recorded: $L=2.820 \mathrm{m}$, $M=3.00 \mathrm{kg}$, $l=0.087 \mathrm{cm}$ and diameter, $D=0.041 \mathrm{cm}$. Taking $g=9.81 \mathrm{m} {\mathrm{s}}^{-2}$ and using the formula, $Y=\frac{4MgL}{\pi D^{2}l}$, the maximum permissible error in $Y$ is,

If there is a positive error of $50\%$ in the measurement of the velocity of a body, then the error in the measurement of its kinetic energy is,

A physical quantity $A$ is related to four observables, $a, b, c$ 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 $A$?

A wire has a mass $0.3\pm 0.003 \mathrm{g}$, radius $0.5\pm 0.005 \mathrm{mm}$ and length  $6\pm 0.06 \mathrm{cm}$. The maximum percentage error in the measurement of its density is,