The time T, taken for a complete oscillation of a single pendulum with length l, is given by the equation T=2πlg where g is a constant. Find the approximate percentage error in the calculated value of T corresponding to an error of 2 percent in the value of l

The time T, taken for a complete oscillation
of a single pendulum with length l, is
given by the equation $T = 2 π \sqrt{\frac{l}{g}}$ where g
is a constant. Find the approximate
percentage error in the calculated value of T
corresponding to an error of 2 percent
in the value of l

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