Y is the right answer to this question.
Answer
D: 132 ft
C= π2r
So, take pi and multiply that by two..
π2= 6.28
Now, take your radius and multiply it by 6.28.
21 x 6.28= 131.88
Round it two the nearest whole number, which is 132!
Hope this helps!
Annually means per year
One year=12 months
27000/12= 2250$
Pythagoras and his followers were known as the Pythagoreans.