Answer:
21. 
22. 87.92
Step-by-step explanation:
21. The quotient means division is going to happen between -s and 15. And then take the square root of that.

22. The equation for the volume of a cylinder is this:

The question gives you values for r, and h, so just substitute those values into the equation.
Here is the work:

They told us to use 3.14 for pi, so i will substitute pi with 3.14

Can you list the options? so i can help, theres not enough info for me to answer
It’s d or a but it’s probably d don’t take my word for it boy
Answer:
the triangles are reflected across the line y= -x
hope this helps
Step-by-step explanation: