Question
The lengths of three medians in a triangles are 30 cm,
40 cm, 50 cm. What is the area of that traingle (in cm 2 )?Solution
Here s = (a+ b+ c )/2 = (30 + 40 + 50) /2 = 120/2 = 60 cm If a, b & c are medians of any triangle , then area of the triangle = 4/3 √(s(s - a)(s - b)(s - c)) = 4/3 √(60(60 - 30)(60 - 40)(60 - 50)) = 4/3 √(60 × 30 × 20 × 10) = (4/3) × 600 = 800 cm²
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