Question: is 2/9 a perfect square?
Answer: The perfect squares are the squares of the whole numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 … Here are the square roots of all the perfect squares from 1 to 100. 1. Estimate - first, get as close as you can by finding two perfect square roots your number is between.