Answer:
14.2 cm
Step-by-step explanation:
A parallelogram is a quadrilateral (a four sided object) with parallel sides
Some of the characteristics of a parallelogram includes :
1. Opposite sides and angles are congruent .
2. Opposite angels are congruent
3. Consecutive angles are supplementary
4. The diagonals bisect each other
Area of a parallelogram = base x height
49.7 = 3.5 x height
height = 49.7 / 3.5 = 14.2 cm
