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kymber

  • 3 years ago

HELP ME PLEASE ಥ_ಥ The ratio of the areas of two similar polygons is 16:25. If the perimeter of the first polygon is 20 cm, what is the perimeter of the second polygon?

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  1. jim_thompson5910
    • 3 years ago
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    If the ratio of the two areas is 16:25, then the ratio of the sides is 4:5 (you take the square root of each component)

  2. jim_thompson5910
    • 3 years ago
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    It turns out that the perimeters form the same ratio as the sides since the perimeter is simply the sum of all the sides

  3. jim_thompson5910
    • 3 years ago
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    we know that the ratio of the perimeters is 4:5, so 4/5 = 20/x Solve this for x to find the perimeter of the second polygon

  4. kymber
    • 3 years ago
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    Okay thaanks :p

  5. jim_thompson5910
    • 3 years ago
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    yw

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