90 degrees
Hope this helps
Answer: the answer is 3(7+3)
Step-by-step explanation: since 7+3 is in paranthases you add them first to get 10 and you multiply it by the 3 to get 30. We know its correct because 21+9=30.
If the shaded region is the area inside the rectangle but outside the square, then the area is 121-25pi or 42.4602
