It’s A because look at the the triangles
For this case we evaluate the following inequality in the given point and verify if it is met:


Substituting:


It is not fulfilled!
The point does not satisfy the inequality
ANswer:
False
You will find the area of the semicircle by finding the area of the circle with a radius of 8.5 mm and the dividing it by 2.
A = pi x r^2
3.14 x 8.5^2
A = 226.865 square mm
226.865/2
113.43
The approximate area of the semi circle is 113.43 mm².