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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?
 one year ago
 one year 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?
 one year ago
 one year ago

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jim_thompson5910Best ResponseYou've already chosen the best response.1
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)
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
It turns out that the perimeters form the same ratio as the sides since the perimeter is simply the sum of all the sides
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
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
 one year ago
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