Exercise 10 Page 619

For the given parallelogram, we are asked to find its area.

The area of a parallelogram is the product of its base and its height. The height is the altitude perpendicular to whichever side is being used as the base. Recall that in a parallelogram, pairs of opposite sides are the same length.

In the given parallelogram, we can see that the base is $5.8$ meters and its corresponding height is is $3.5$ meters. We can substitute these two values into the formula for the area of a parallelogram, then simplify. The area of the triangle is $20.3{\text{ m}}^2.$