The area of a circle is

The radius is half the diameter, so we have

The greater common factor is 4
Answer:
What math are you in
Step-by-step explanation:
1). 662.4
2). $8.89
3). $100.80
4). $7.54
5). $4.18
6). 27 (but I'm not 100% sure)
Answer:

Step-by-step explanation:
Note that
sin135° = sin(180 - 135)° = sin45° =
= 