Question
Sun July 29, 2012 By:

Triangle PQR is similar to Triangle ABC such that Area of Triangle PQR = 4(area of triangle ABC)

Triangle PQR is similar to Triangle ABC such that Area of Triangle PQR = 4(area of triangle ABC) Find the ratio their perimeter

Expert Reply
Mon July 30, 2012
The ratio of areas is the square of the ratio of perimeters.
If area(triangle PQR)/area(triangle ABC) = 4
then, perimeter(triangle PQR)/perimeter(triangle ABC) = 2
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