Answer:
What’s this called again? And do u possibly know the formula for this? I just need these elements to solve it... plz reply
Step-by-step explanation:
20 because of the whole is 40 and the shaded part is by 20 you just take half of 40 and you get 20
Answer:

Step-by-step explanation:
Let's pretend the empty, white space in the middle is a triangle. A right triangle. then we just use the pythogerean theorem to get the a.

14-21= -7
-7 is your answer ^^
Answer:
Step-by-step explanation: -13, 9