Construction of a pie-diagram: Algorithm

The following table gives the monthly expenditure of two families In constructing a pie diagram to the above data, the radi of the circles are to be chosen by which one of the following ration?

The following table gives the monthly expenditure of two families: In constructing a pie diagram to the above data, the radii of the circles are to be chosen by which one of the following ratios?

Explain the rules for construction of ray diagrams for lenses.

Define pie diagram.

Give the principle, construction and labelled diagram of AC generator.

Consider the following statements : 1. Pie diagrams are suitable for catagorical data. 2. The arc length of a sector of a pie diagram is proportional to the value of the component represented by the sector. Which of the statements given above is/are correct/