Answer:
1
Step-by-step explanation:
<h2>
Explanation:</h2><h2>
</h2>
Here we need to simplify the square root of ten times square root of eight, so let's write this step by step:
Step 1. The square root of ten

Step 2. The square root of eight

Step 3. The square root of ten times square root of eight

Finally, the correct option is:
<em>Four square root of five</em>
The angle is called an hypotenuse and to find it just use the Pythagorean Theorem which states a squared+b squared= c squared, does this answer your question or do you need more help?