Answer:

Step-by-step explanation:
The number inside the square root symbol is the number you have to get when you multiply a certain number twice.
So
:
What multiplied by itself is 121?
Backwards equation:


Do not do the backwards method all the times, it does not work for all numbers.
To find the area of a triangle, you need the formula . A= b*h divided by 2
Answer:
Hello
Step-by-step explanation:
The domain is limited with 2 lines parallel: -1 ≤ x ≤ 1
and the disk ? (inside of a circle) of center (0,0) and radius 2

Thank you thank you very much