Find the square root of 81225
Answers
Answer:
9 is the correct answer bro
Answer:
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Step-by-step explanation:
Step 1:
What is the last number of 81,225? It is this number: 81225. The answer is 5. Is 5 in the list of numbers that are never perfect squares (2, 3, 7 or 8)?
Answer: NO, 5 is not in the list of numbers that are never perfect squares. Let's continue to the next step.
Step 2:
We now need to obtain the digital root of the number. Here's how you do it:
Split the number up and add each digit together:
8 + 1 + 2 + 2 + 5 = 18
If the answer is more than one digit, you would add each digit of the answer together again:
1 + 8 = 9
What is the digital root of number 81,225?
Answer: 9
Step 3:
So now we know the digital root of 81,225 is 9. Is 9 in the list of digital roots that are always a square root (1, 4, 7 or 9)?
Answer: YES, 9 is in the list of digital roots that are always perfect squares. We can conclude that 81,225 could be a perfect square!
Factoring
OK, so now we know that 81,225 could be a perfect square. We have to find the factors of the number to be sure.
Here is the factor of 81,225:
285 x 285