1. The problem involves finding the area of shapes with dotted lines, which usually represent heights or altitudes. 2. The key formula for area of a parallelogram or triangle is $\text{Area} = \text{base} \times \text{height}$. 3. For parallelograms, the height is the perpendicular distance between the bases, often shown as a dotted line. 4. For triangles, the height is the perpendicular from the base to the opposite vertex. 5. To solve, identify the base and the height (dotted line), then multiply them. 6. Example: For a parallelogram with base $b=11$ yd and height $h=6.2$ yd, area is $$A = b \times h = 11 \times 6.2 = 68.2.$$ 7. If the height is not given, use Pythagorean theorem or trigonometry to find it from the dotted line. 8. Always ensure the height is perpendicular to the base before multiplying. 9. This method applies to all shapes with dotted lines indicating height. 10. Practice by identifying base and height, then apply $A = b \times h$ for parallelograms or $A = \frac{1}{2} b \times h$ for triangles.