Find the area of each figure. if necessary, leave answer in terms of pi.

We are asked to find the area of a triangle and the area of a parallelogram. The area of a triangle can be expressed by the formula . Similarly, the area of a parallelogram can be found using the formula . In both formulas,  and . 
Area of a Triangle:
Formula:


Plug them in - 

Multiply - 

Parallelogram:
Formula: 


Plug values in - 

Hope this helped!