What is the positive square root of \( 81 ? \)

The positive square root of \( 81 \) is \( 9 \). This means that if you multiply \( 9 \) by itself, you'll get \( 81 \) (because \( 9 \times 9 = 81 \)). It's like unlocking a treasure chest—once you find the square root, everything inside becomes clear! Square roots are crucial in various fields, including geometry, physics, and engineering. For instance, they play a key role in calculating the diagonal of a square or even in determining distance in various equations. Understanding how to use square roots effectively can lead to exciting problem-solving adventures!