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Anita covers a shape on grid paper and records: 18 full squares, 10 more-than-half squares, 7 less-than-half squares.
Her friend Bina records a different shape: 20 full squares and 5 more-than-half squares (no less-than-half ones).
Using the standard rule, whose shape has the larger estimated area, and by how many square units?

Class 6Area on GridsMensuration
  • AAnita's, by 3
  • BBina's, by 3
  • CBoth equal
  • DAnita's, by 7

Step-by-Step Solution

Anita = 18 + 10 + 0 = 28 square units (less-than-half counts 0). Bina = 20 + 5 = 25 square units. Difference = 28 - 25 = 3, so Anita's shape is larger by 3 square units.
Answer: A) Anita's, by 3

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