Answer:

Step-by-step explanation:
Area of circle:

By using the area of a circle, we can get the area of a semicircle:

Let's convert the mixed fraction to an improper fraction and then a decimal:
=
= 
Now, we solved for the diameter, to get the radius, we need to divide the diameter by 2:

Now we have the radius, so we can plug in our values and find the area:


Answer:
9 + 2j is the required algebraic equation.
6.<span>41666666666 is 6 5/4 in decimal form</span>
Answer:
218,205,858,257,659,822,002
Step-by-step explanation: