find the area of the shaded area of the circle. half circle radius

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Area = pi r^2

shown is a half circle that is shaded with a line and r under it. A=3.14(180)2=101736.

To find the area of the shaded area of the circle, we need to know the radius of the circle and the measure of the angle of the shaded portion. However, you have only mentioned the radius of the half circle, and the measure of the angle of the shaded portion is not provided.

In a complete circle, the area is given by the formula A = πr^2, where "A" represents the area and "r" represents the radius. Since the shaded area is only half of the circle, we need to divide the result by 2.

If we assume that the angle of the shaded portion is a semicircle (which measures 180 degrees), we can proceed with the calculations. Let's say the given radius of the half circle is "r". The radius of the full circle is also "r" since it is just twice the radius of the half circle.

Using the formula A = πr^2, we can calculate the area of the full circle:

A = π(2r)^2
A = 4πr^2

Now, to find the area of the shaded region, we divide the area of the full circle by 2 (since it is only half of the circle):

Shaded Area = (4πr^2)/2
Shaded Area = 2πr^2

So, if the angle of the shaded portion is a semicircle, the area of the shaded region would be 2πr^2.

Please provide additional information if the angle of the shaded portion is different from a semicircle.