Answer:
74.09453421...
Step-by-step explanation:
Pythagorean Theorem
<span> -a2b2 + 9a2 + 24ab + 4b2 - 36
</span><span>hope it helps
</span>
simplify -7.39 -(-4.8)- 5.32 = -7.91
20*282= 5640
10680-5640=5040
50-20=30
5040 dividend by 30= 168
Answer: 168
The formula for the area of a circle is

We know the diameter, and the radius is half of the diameter. So the radius is 9. Now we plug that into the formula.

So the answer is B, 81 pi square feet