I believe the answer is 12. I hope this helps you and have a great day!
4 • 4 is 16
If you need help with multiplication, I would advise looking at the times table.
Answer:
the answer is c :)
Step-by-step explanation:
Check the picture below.
now, let's rationalize the denominator for "r" first.
also notice, that section is just 1/4 of the area of that circle, so, let's just find the area of the whole circle with that "r", get one-quarter of it, and subtract it from the half of the area of the square.