Acceleration due to gravity.....

Question

The acceleration due to gravity on the moon is 1.62 m/s^2. What is the length of a pendulum whose period on the moon matches the period of a 1.90-m-long pendulum on the earth? Length in meters

Answer 1

t=2pi sqrt.(l/g)

use this eqn. for the pendulum on earth where g=9.8 and l=1.9

then equate this t with moon's pendulum where everything is known except l