44. \( \sqrt{140} \)

To simplify \( \sqrt{140} \), you can break it down into its prime factors. 140 can be factored into \( 4 \times 35 \). The square root of 4 is 2, so you can rewrite \( \sqrt{140} \) as \( 2\sqrt{35} \). This gives you a tidier expression while maintaining its value! Now, if you want a decimal approximation, you can simply calculate \( \sqrt{35} \) which is roughly 5.916. Multiplying that by 2 gives you approximately 11.832. It's a handy number when you’re dealing with real-life problems, like finding the length of the sides when calculating areas or working with geometric shapes!