Answer:
Step-by-step explanation:
For this case we have that by definition, the area of a circle is given by:

Where:
r: It is the radius of the circle
According to the data of the statement we have that the circle has a radius of 
Substituting in the formula we have:

So, the area of the circle is
feet squared
Answer:
Option D
Answer:
0.53
Step-by-step explanation:
0.533
Decimal places go 10ths, 100ths, 1000ths, and so on. The nearest hundred therefore, is the first 3. Looking at the next digit, which is 3, because it's less than 4, we know we have to round down, which makes the answer 0.53
Answer:0 feet
Step-by-step explanation:
-20+20=0