kymber
  • kymber
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?
Mathematics
chestercat
  • chestercat
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jim_thompson5910
  • jim_thompson5910
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)
jim_thompson5910
  • jim_thompson5910
It turns out that the perimeters form the same ratio as the sides since the perimeter is simply the sum of all the sides
jim_thompson5910
  • jim_thompson5910
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

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kymber
  • kymber
Okay thaanks :p
jim_thompson5910
  • jim_thompson5910
yw

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