The sum of the radius of the base and the height of a cylinder is 55 cm. If the height of the cylinder mentioned above is 15 cm more than the radius of its base, then what is the curved surface area of this cylinder?\( \text{use } \pi = \frac{22}{7} \)
The following table shows the number of parks in four cities of India.
| City | Number of parks |
| Delhi | 346 |
| Jaipur | 247 |
| Mumbai | 326 |
| Kolkata | 421 |
The number of parks in Delhi is what percentage of the total number of parks in all t he four cities taken together? [Give your answer correct to 1 decimal place.]