|Item||Sale (in Rs)||Sector angle|
|Ordinary bread||260||260/480 360 = 195|
|Fruit bread||40||40/480 360 = 30|
|Cakes and pastries||100||100/480 360 = 75|
|Biscuits||60||60/480 360 = 45|
|Others||20||20/480 360 = 15|
Now, the pie chat representing the given data can be constructed by following the steps below:
Step 1 : Draw circle of an appropriate radius.
Step 2 : Draw a vertical radius of the circle drawn in step 1.
Step 3 : Choose the largest central angle. Here, the largest central angle is 195o. Draw a sector with the central angle 195o in such a way that one of its radii coincides with the radius drawn in step 2 and another radius is in its counter clockwise direction.
Step 4 : Construct other sectors representing other items in the clockwise direction in the descending order of magnitudes of their central angles.
Step 5 : Shade the sectors with different colours and label them, as shown as in the figure below.