Answer:
b because the value are correct
Step-by-step explanation:
Use pythagorians theorem a^2 + b^2 = c^2. 4^+20^ = 20.40 feet. The ladder is 20.40 feet long.
Answer:
<h2>Below</h2>
Step-by-step explanation: Let the unknown no be x
1.

2.

3. The sum of the product and of 5 and a cubed number and 9