Aim: How do we calculate the are of rectangles and triangles?

To calculate the area of a rectangle you must follow this formula:
 
Base times Height (b x h) = Area



To find the Area of a triangle you must follow this formula:

Base times Height times 1/2 (b x h x 1/2) = Area



Try these problems:
If the base of a rectangle is 7.3 and the height is 4, what is  the area?

If the base of a triangle is 6 and the height is 5, what is the area?