The answer is: 25 m² .
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Note: The formula for the area of a triangle is:
A = b * h / 2;
in which:
A = area;
b = base;
h = height;
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A = b * h / 2 ;
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A = (5m * 10 m) / 2 = 50 m² /2 = 25 m² .
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