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On increasing each side of a square by 50%, the ratio of the area of new square formed and the given square will be
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- 9 : 5
- 9 : 3.5
- 9 : 7
- 9 : 4
- 9 : 5
Correct Option: D
Using Rule 10,
Side of the given square = x cm (let)
| Side of new square = | cm. (let) | |
| 2 |
| ∴ Required ratio of areas = |  |  | ² | : x² = | = : x² | ||
| 2 | 4 |
= 9 : 4
