Q:
# What Is the Square Root of 40?

**The square root of 40 is 6.3245553.** The square root of 40 is also written as 2√10. Numbers that are perfect squares have a whole number as their square roots.

Numbers such as 4, 9, 16 and 25 are perfect squares. Their square roots are 2, 3, 4 and 5, respectively. However, the prime factors of 40 are 2 x 2 x 2 x 5. This indicates that 40 is not a perfect square, as each prime factor must be present in multiples of 2 for a number to be a square. The prime factors of 36 are 2 x 2 x 3 x 3, and this shows that the square root of 36 is 2 x 3, which equals 6.

Learn more about Arithmetic-
Q:
## What Is the Square Root of 320?

A: The number 320 is not a perfect square, and, therefore, its square root is a decimal number. Hence, the square root of 320 is slightly less than 18, or abo... Full Answer >Filed Under: -
Q:
## What Is the Square Root of 244?

A: The square root of 244 is 15.6204993518. To obtain the square of the number 244, users should multiply 15.6204993518 by 15.6204993518. Full Answer >Filed Under: -
Q:
## What Is the Square Root of 90?

A: The square root of 90 is 9.48. The square root is determined by finding a number that, when multiplied by itself, equals the number in the square root func... Full Answer >Filed Under: -
Q:
## What Is the History of the Square Root in Mathematics?

A: According to Saint Louis University, the ancient Egyptians created the square root and most likely used it for architecture, building pyramids and other da... Full Answer >Filed Under: