what's the square root of 780?

I just now typed

sqrt(780)

google window and guess what?

390 Have another go, I got 27.93

To find the square root of 780, you can use a calculator, or manually perform the calculations using a method called "prime factorization." Here's how you can do it manually:

Step 1: Prime Factorization: Start by finding the prime factors of 780. Divide 780 by its prime factors until you can't divide anymore. The prime factors of 780 are 2, 2, 3, 5, and 13, which can be written as 2^2 * 3 * 5 * 13.

Step 2: Group the Factors: Group the prime factors in pairs, taking one factor from each pair, until you have no more pairs. In this case, you can group the two 2s together (2 * 2 = 4) and leave the remaining factors as it is.

Step 3: Calculate: Multiply all the unpaired factors together. Multiply 4 with 3, 5, and 13.

4 * 3 * 5 * 13 = 780.

Therefore, the square root of 780 is √780 ≈ 27.9288 (approximately).

Alternatively, you can use a calculator to directly find the square root of 780 as 27.9288.