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OpenStudy (anonymous):
What is the perimeter of triangle ABC? Round to the nearest tenth. A. 10.8 units B. 8.8 units C. 5.8 units D. 13.8 units
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OpenStudy (anonymous):
OpenStudy (hoblos):
the distance between 2 points (x1,y1) and (x2,y2) is given by \[\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}\] so calculate the distances of the 3 sides and add them up
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