Figures 1 and 2 are similar pentsgons. Find the perimeter of pentagon 1.

Figure 1 perimeter : x
Area Figure 1: 36 cm2

Figure 2 perimeter:80 cm
Area figure 2:400 cm2

Question

Figures 1 and 2 are similar pentsgons.  Find the perimeter of pentagon 1. 

Figure 1 perimeter : x
Area Figure 1: 36 cm2 

Figure 2 perimeter:80 cm
Area figure 2:400 cm2

compassionate · Answer

Now, this may be abstract man and off the top of my head, but it looks like they want you to use ratios. $$\frac{ 1}{ 36 } + \frac{ 1 }{ 200 } = 80 + x$$

compassionate · Answer

In theory, solving this will give you the perimeter of x.

anonymous · Answer

I got 79.718

directrix · Answer

If two polygons are similar, then the scale factor is equal to the ratio of the perimeters.

If two polygons are similar, the square of the scale factor is equal to the ratio of the areas of the two polygons.

directrix · Answer

Therefore,

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