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11 7 Ratio Of Areas
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11 7 Ratio Of Areas

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Transcript

  • 1. 11-7 Ratio of Areas
  • 2.
    • If the scale factor of two similar figures is a:b then:
      • The ratio of the perimeter (circumference) is a:b
      • The ratio of the areas is a 2 :b 2 .
  • 3. Example
    • The scale factor of two circles is 5:2. The area of the small circle is 12 π . What is the area of the big circle?
  • 4. 11-8 Geometric Probability
  • 5. Probability
    • 1 – going to occur
    • 0 – not going to occur
    • ½ - 50% change of occurring
  • 6. How to calculate
    • Length to be picked from
    • Whole length
    • Or
    • Area to be picked from
    • Whole area
  • 7. SPICSA
    • Page 470 1-23 all

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