Answer:
Break into smaller figures.
Explanation:
Obviously here you wouldnt be able to get a value for the area since there aren't any values but this is what you gotta do:
1. Area of semi-circle. 1/2 * pi *r^2
Here we know that r = 1/2 of PH so the area of the semi-circle is 1/2*pi*(1/2PH)^2
2. Area of rectangle. LxW
This one is easy, Length times width. ON/HK (cus they're the same) times (OH/NK)
3. Triangles
For both triangles you need the height of the triangle. in triangle NML this would be the length from M to the line NL. You do this for both triangles and then use (base times height)/2 for the area.
4. Add all those areas up.