8. Find the area of the figure.

or

Step-by-step explanation:

Formula for calculating area of a circle:

Formula for calculating area of a triangle:

Formula for calculating radius from diameter:

The left figure isn't a circle but a half circle, which (that the name indicates) is half a circle, and therefor also half the area of a circle. So the formula for calculating the area of a half circle is:

The right figure in the image is a triangle, so we can use the triangle-area-formula above for that:

The diameter of the half circle is 7 cm which means that the radius is 3.5cm.

6.125*pi is about 19.24225 cm^2

Now we just have to add the two areas together to get the total area.

The exact answer is:

The approximate answer is:

Hope i could help you understand!

If you have any questions, ask them in the comments below!

Have a good day (●'◡'●)