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Sagot :

AREA

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1. A = 28cm^2

Solution:

  • A = 1/2 BH
  • A = 1/2 (8cm) (7cm)
  • A = (8cm) (3.5cm)
  • A = 28cm^2

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2. A = 121cm^2

Solution:

  • A = s × s
  • A = 11 × 11
  • A = 121cm^2

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3. A = 450cm^2

Solution:

  • A = 1/2 (B1, B2) (H)
  • A = 1/2 (15cm, 10cm) (18cm)
  • A = 1/2 (25cm) (18cm)
  • A = 450cm^2

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4. A = 140cm^2

Solution:

  • A = B × H
  • A = 14 × 10
  • A = 140cm^2

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5. A = 153.93cm²

Solution:

  • A = πr²
  • A = π (7cm)²
  • A = π (7cm) (7cm)
  • A = 49π
  • A = 153.93cm²

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Hope it helps (⑅•ᴗ•⑅)