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1. Refer to the pie-chart and the table carefully and answer the given question.
Distribution of total number of cellular phones (both Nokia and Samsung) sold by six stores in October.
Ratio of the number of Nokia cellular phones sold to that of Samsung cellular phone sold.
What is the central angles corresponding to the total number of cellular phones (both Nokia and Samsung) sold by store S?
Percentage of cellular phones (both Nokia and Samsung) sold by Store S = 26%
∴ Required central angle
= × 360
= 93.6°
Distribution of total number of cellular phones (both Nokia and Samsung) sold by six stores in October.
Ratio of the number of Nokia cellular phones sold to that of Samsung cellular phone sold.
| Store | Ratio |
| P | 4 : 3 |
| Q | 3 : 1 |
| R | 5 : 4 |
| S | 7 : 6 |
| T | 1 : 4 |
| U | 11 : 10 |
What is the central angles corresponding to the total number of cellular phones (both Nokia and Samsung) sold by store S?
Solution:
| Store | Nokia Cellular Phones | Samsung Cellular Phones | Total Number of Cellular Phones |
| P | 896 | 672 | 1568 |
| Q | 840 | 280 | 1120 |
| R | 1120 | 896 | 2016 |
| S | 1568 | 1344 | 2912 |
| T | 448 | 1792 | 2240 |
| U | 704 | 640 | 1344 |
Percentage of cellular phones (both Nokia and Samsung) sold by Store S = 26%
∴ Required central angle
= × 360
= 93.6°