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Question
Find the area of the following figure by counting squares:

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Solution
From the given figure, we observe
| Covered Area | Number | Area estimate (square units) |
| Fully filled squares | 8 | 8 |
| Half filled squares | – | – |
| More than half-filled squares | 10 | 10 |
| Less than half-filled squares | 9 | 0 |
Therefore total area = 8 + 10 = 18 square units.
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