The length of the unknown side is 16 meters
<h3>What is a right triangle?</h3>
A right triangle is a triangle that has one of its angles to be 90 degrees
The length of the unknown side is calculated using the following Pythagoras theorem.

Evaluate the exponents

Collect like terms

Evaluate the like terms

Take the square root of both sides

Hence, the length of the unknown side is 16 meters
Read more about Pythagoras theorem at:
brainly.com/question/654982
It says to estimate, so if I'm right, you would round each, add the new totals together, and then subtract that total from 20. 3.99 would be 4 dollars, 2.29 would round down to 2 dollars, and 6.75 rounds up to 7. 4+2+7=13. 20-13=7, so therefore, she would recieve about 7 dollars in change.
Answer:
its the second one hope this helps
Step-by-step explanation:
One yard is 3 feet.
6 * 3 = 18
A male giraffe can grow as tall as 18 feet.
The answer would be either C or D