Find the common ratio. (The number you multiply or divide.) 3. Create a recursive formula<span> by stating the first term, and then stating the </span>formula<span> to be the common ratio times the previous term.</span>
Answer:
20
Step-by-step explanation:
The pythagorean theorem states that

So 
You would then do

Because a square root is the opposite of a square.

because 20 * 20 = 400