The square root of 0.0004 is 0.02.
To understand this, let’s break it down step by step.
First, we can express 0.0004 in a simpler form. We can write it as 4 x 10-4. Now, when we take the square root, we need to find a number that, when multiplied by itself, gives us 0.0004.
The square root of 4 is 2, since 2 x 2 equals 4. Next, we look at the squared part of our number, which is 10-4. The square root of 10-4 is 10-2 because (-2) x (-2) equals -4.
Now, when we combine these results, we get:
2 x 10-2 = 2 / 100 = 0.02
Therefore, the square root of 0.0004 is 0.02.