# What is the square root of 784?

##### 4 Answers

#### Explanation:

-Write down the factors of

- For example, if you see

- At this time you verify one by multiplying

Recheck:

The square root of

#### Explanation:

It is beneficial to be able to **estimate**, or calculate exactly the square root of any number when a calculator is not present.

For this example, we can start an estimation limit high and low as follows:

If we raise the lower limit to

Now our range is

But the squared number ends in

So the Square root of

#### Explanation:

The square root of

Kindly use a calculator for these questions,.

If want to recheck the answer, multiply

If you still have doubts use a prime factor tree.

#### Explanation:

You are looking for squared values that are factors of 784. Use the lowest value prime numbers that you can. Good idea to commit some of them to memory. It will pay off in the end. You can find lists of them all over the internet.

From the factor tree we have: