Sqrt(40). 0 0. Use the square root calculator below to find the square root of any real number, positive or negative. See also on this page a square root chart 1 to 100. sqrt(40) = sqrt(4) * sqrt(10) And the square root of 4 is 2. 8 years ago. The Square root of 40 is about 6.32. Factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40 2. Sign in. Here are the answers to questions like: Square root of 40 or what is the square root of 40? First we write the square root of 40 like this: √ 40 The largest perfect square of the factors of 40 is 4. You can sign in to give your opinion on the answer. Lv 7. If you need the decimal, it's about 6.32455. 4X10= 40 take the square root of 2 and makes exactly a 2, and just leave the square root of 10 with radical sign so the answer is 2i square root of 10 Find the square root of 40 or any other real number, positive or negative. Here is how to do that! Take it like this: 1. The square root of 40 in its simplest form means to get the number 40 inside the radical √ as low as possible. So sqrt(40) = 2 * sqrt(10), which is what your calculator is telling you. lenpol7 . Which of these factors is a perfect square? What do you think of the answers? 40 is equal to the square root of 41 2 - 9 2 and the square root value of 40 is 6.32456. Rounded to two decimal places, the Square root of 40 is equal to Â±220.127.116.11455532 Square root of 40.