Plot the points (0, 0),(0, 3), (3, 4), (4, 0) in graph sheet. Join the points with straight lines to make a rectangle. Find the area of the rectangle.

Plotting the points :

Joining the lines to form a rectangle and finding its area :

Finding the area :

From the graph, we can see that,

L = AD = 4 units

B = ED = 3 units

Now, area of rectangle = L × B = 4 × 3 = 12 sq. unit.

∴ Area of rectangle BEDA = 12 sq. unit.