1) a. Socratics, chegg, khan academy
1) b. They all learning apps that help you understand problems if any subject. It also has online tutors to help you.
2. To insert a square root, just type \sqrt and then the Enter or Tab key to insert the square root symbol.
Answer:

<h3><u>0.0197192</u> is the right answer.</h3>
Area is the area of something and the premeter of something