A physical quantity P-is related to four observations: a, b, c and d as follows: P = a³b²/√(cd). The percentage errors of measurement in a, b, c and dare 1%,3%,4% and 2% respectively. What is the percentage error in the quantity P ? If the value of P calculated using the above relation turns out to be 3.763, to what value should you round off the result?