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Mathematics 21 Online
OpenStudy (anonymous):

Help pleasee

OpenStudy (anonymous):

The diagram shows corresponding lengths in two similar figures. Find the ratio of the perimeters and the ratio of the areas. A. 3:4 and 180:240 B. 3:4 and 9:16 C. 9:16 and 180:240 D. 15:20 and 180:240

OpenStudy (anonymous):

OpenStudy (anonymous):

I'm thinking A because the ratio for the perimeter and the area is 3:4. Also, the area of the first figure considering the ratio is 3:4 means that the area is 180.

OpenStudy (anonymous):

\[\frac{ 15 }{ 20 }=\frac{ 3 }{ 4 }\]240/4=60 60*3=180

OpenStudy (anonymous):

That's all the math I used. ^^

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