Homework Help: math

Posted by laura on Tuesday, December 7, 2010 at 11:21pm.

mike has two mats in the shape of triangles. the scale factor of the two mats is 7/9. what is the ratio of the perimeters?

math - Reiny, Tuesday, December 7, 2010 at 11:32pm
since perimeter is linear,
the ration of their perimeters is 7/9

however, the ratio of their areas would be 49/81

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