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You can't tell. Knowing the area doesn't tell you the dimensions. There are an infinite

number of triangles, all with different dimensions, that all have the same area.

Here are a few RIGHT triangles, with their perimeters.

ALL of them have the same area . . . . . it's 4.

1.6, 10, 10.127 --- 21.727

1.777, 9, 9.174 --- 19.952

2, 8, 8.246 -------- 18.246

2.285, 7, 7.364 --- 16.650

2.666, 6, 6.218 --- 14.885

3.2, 5, 5.936 ------ 14.136

4, 4, 5.657 -------- 13.657

5.333, 3, 6.119 --- 14.452

16, 1, 16.031 ----- 33.031

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Q: What is the perimeter of a triangle with area 4?
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