Help in geometry finding area please

Now find the area of triangle part. First you need to find the length of the base. You can do it by using your brain :P. After that use the triangle area formula A=0.5*(base)*(height).
Again you are left with the rectangular and you now know the drill... Find the area of rectangular and add all areas together to find your answer.

3. Half circle and triangle.... You have everything you need for the formulas. Just plug them in and add the results later.
4. Again find the area of half circle and then use this area formula of parallelogram to find the area. A=a*h(of a) So in this case the area of parallelogram will be A=25.2*14.
5. Well it's a theorem(?) of vertical angles. Read about it in a book or whatever.
x=180-101=79
6.Those triangles are similar. So we can use the proportion to find triangles.
13/5=169/x
x=65
7. Again with similarities.
5/80=15/L
L=240

Hope this helps.