Area of a parallelogram with a base 13 and height 40 equal to 520
A parallelogram is a quadrilateral whose opposite sides are parallel in pairs (lie on parallel lines).
Parallelogram area formula 
where a is the base, h is the height
where b is the side, hb is the height
where d1,d2 are diagonals, α° is the angle between them
where a is the base, b is the side, α° is the angle between themSolution:
S = a·h
=
13·40
=
520
Answer: the area of a parallelogram with a base 13 and height 40 equal to 520