Original text - English - math problem

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Nhóm chuyên mục Expression - Science

Title	math problem
Text to be translated Submitted by trs342	Source language: English Heron's formula tells us that the area of a triangle is determined by the lengths of its three sides; is it true that the volume of a tetrahedron is determined by the areas of its four faces?

19 Tháng 1 2011 12:56