1. **State the problem:** Find the area of a parallelogram with base length 13 yd and height 9 yd. 2. **Formula:** The area $A$ of a parallelogram is given by $$A = \text{base} \times \text{height}$$ where the base and height are perpendicular. 3. **Apply the values:** Here, base $= 13$ yd and height $= 9$ yd. 4. **Calculate the area:** $$A = 13 \times 9$$ $$A = 117$$ 5. **Answer:** The area of the parallelogram is $117$ square yards (yd$^2$).