Is the square root of 64 rational or irrational? The square root of 64 is a rational number if 64 is a perfect square. It is an irrational number if it is not a perfect square. Since 64 is a perfect square, it is rational number. This means that the answer to "the square root of 64?" will have no decimals. √ 64 is a rational number
simple version:yes its rational
