If you're looking for the answer to square root of 10 times square root of 2 in its simplest form and in decimal form, you have come to the right place. Here are step-by-step instructions to calculate square root of 10 times square root of 2.

**Step 1: Setup**

We start by showing you how to write square root of 10 times square root of 2 mathematically, so it is easy to follow along. Note that the square root symbol (√) is called a radical, and the number inside the radical is called a radicand. Here is what we want to solve:

√10 × √2

**Step 2: Multiply together**

It is easy to multiply two square roots together, such as √10 × √2. This will result in just one radical and one radicand. Here is the formula and the math:

√a × √b = √a × b

√10 × √2 = √10 × 2

√20

**Step 3: List factors of radicand**

Now we will list all the factors of the radicand from the previous step.

Factors of 20: 1, 2, 4, 5, 10, 20.

**Step 4: Find largest perfect square**

We now need to find the largest perfect square from the factors we listed above. If the square root of a number is an integer, then the number is a perfect square. The largest perfect square (LPS) from the list above is as follows:

LPS: 4

**Step 5: Calculate simplest radical form**

To simplify the result from Step 2, we divide the radicand by the LPS to get the new radicand. The square root of the LPS becomes the outside number to the left of the radical. Here is the formula and the math, where R refers to the radicand:

(√LPS)√R ÷ LPS

(√4)√20 ÷ 4

2√5

**Step 5: Calculate decimal answer**

The decimal answer to √10 × √2 is simply the square root of the product we got from Step 2.

√20 ≈ 4.472136

That's it. Now we have the square root of 10 times the square root of 2 in its simplest form and in decimal form:

√10 × √2

**= 2√5 ≈ 4.472136**

**Multiplying Square Roots Calculator**

Use the calculator below to multiply together another set of square roots.

Square root of 10 times square root of 3

Here is the next square root math problem on our list that we have solved for you.

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