2017 · Q94
The pie diagrams on the monthly expenditure of two families A and B are drawn with radii of two circles taken in the ratio 16 :9 to compare their expenditures. Which one of the following is the appropriate data used for the above mentioned pie diagrams ?
Elementary MathematicsStatistics
- A₹ 16,000 and ₹ 9,000
- B₹ 8,000 and ₹ 4,500
- C₹ 25,600 and ₹ 8,100
- D₹ 4,000 and ₹ 3,000
Explanation
Pie areas scale as radii² = 16²:9² = 256:81. Only ₹25,600 and ₹8,100 are in the ratio 256:81. Hence option (C).