The base of an isosceles trianle measurs 80 cm and its area is 360 cm 2 . find the perimeter of the triangel.
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heron's formula
Answer is : a-40 * 40+a = 81 ( 129600 / 1600 )
Answer is : a-40 * 40+a = 81 ( 129600 / 1600 )
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