Determine the area of each semicircle or quarter circle. Think carefully about whether the length you are given corresponds to a radius or a diameter. Give your answers to the tenths decimal place (1 decimal such as 3.4) and DO NOT include the units because it is very difficult to do in the answer field because these are all squared. Use 3.14 for LaTeX: \piπ. Remember the formula for Area of a Circle is: LaTeX: A=\pi r^{^2}

Area of semicircle = 1/2(πr^2)

Area of quarter circle = 1/4(πr^2)

Step-by-step explanation:

The question is incomplete. You didn't provide the diagrams for the semicircle and quarter circle to evaluate the areas. I would explain how to find the area of a semicircle and quarter circle.

Area of a circle = πr^2

where r = radius and π = 3.14

If diameter (d) is given: d = 2r

To get radius, divide diameter by 2.

r = d/2

A semicircle is half of a circle.

Area of a semicircle is half the area of a circle.

Area of a semicircle = 1/2(πr^2)

A quarter circle is a quarter of a circle.

Area of a quarter circle is quarter of the area of a circle.

Area of a quarter circle = 1/4(πr^2)

Further explanation with diagram has been added as as an attachment.

Check the picture below.

so the regular polygon has an interior angle of 70°+70° = 140°.