Area of triangles for same base and height will be same.

Compare area of triangle SPN and area of triangle MQN( prove that they are congurent)

What are the properties of a parallelogram?

Compare both the area by equating them.

Think about triangles on same base and between same parallel lines.

Use this formula: Area of paper = Area of square + Area of an equilateral triangle

Just use the properties of shapes on the same base.

What happens when two parallelograms are on the same base and between the same parallels?