The first is to write the formula for finding the area of a circle.
Area=pi×radius^2
The diameter is given here. To find the radius, divide the diameter by 2.
So 8/2=4
Now substitute 4 for the radius.
Area=3.14(pi approximation) ×4(radius) ^2
A= 3.14×(4)^2
A=3.14×16
A=50.24
Your answer is A. when you round the solution