The square root of 87 is approximately 9.319.
To understand this, we can break it down a bit. The square root of a number is a value that, when multiplied by itself, gives the original number. In this case, since 87 is not a perfect square, we look for the two perfect squares closest to 87, which are 81 (9×9) and 100 (10×10).
By estimating, we find that the square root of 87 falls between 9 and 10. If we calculate it using a calculator or a mathematical method, we find it comes out to about 9.319. This means that if you were to multiply 9.319 by itself, you would get a number very close to 87.
For practical purposes, you can round this to 9.32 if you need a simpler figure.