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OpenStudy (anonymous):
Find the ratio of the areas of figures I and II.
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OpenStudy (anonymous):
OpenStudy (anonymous):
The first one is 2:3 the second one is 1:3
OpenStudy (anonymous):
how did you get that
OpenStudy (ddcamp):
The first problem is a ratio of areas in two similar figures. Remember, of the side lengths have a ratio of a:b, then the ares will have a ratio of a²:b² The side length of figure I is 3, and the side length of figure II is 5. If the lengths have a ratio of 3:5, what is the ratio of the areas?
OpenStudy (anonymous):
9:25
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OpenStudy (ddcamp):
Good! For the second one, we can draw more triangles on the rectangle: |dw:1383882547084:dw|
OpenStudy (ddcamp):
|dw:1383882575437:dw|
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