To calculate the area of a circle, use the equation a=pir^2 or area=3.14*radius squared
Insert the known values. We need to find the radius of the circle. Since the radius is half of the diameter, divide the diameter by 2 to get the radius.
The diameter is 20.
20/2=10
Area=3.14*10 squared
Area=3.14*100
Area=314 cm
Hope this helps!
Answer:
<h3>The answer after performing the indicated operation is in descending powers of x is
</h3>
Step-by-step explanation:
Given expression is 
<h3>To perform the operation indicated, then place the answer in the proper location on the grid and also Write answer in descending powers of x:</h3>
Now solve the given expression as below ( that is perform the operation indicated)
Adding the like terms we get
<h3>The answer after performing the indicated operation is in descending powers of x is
</h3>
Answer:
c f(-1) = 1/4
Step-by-step explanation:
f(x) = x-1
-----------
x^2 -9
Let x=-1
f(-1) = -1-1
-----------
(-1)^2 -9
f(-1) = -2
-----------
1 -9
=-2/-8 = 1/4
