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12 February, 11:50

Find the area of a triangle with legs that are: 15 m, 25 m, and 20 m.

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  1. 12 February, 12:48
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    This is a right triangle. We can demostrate it by applying the Pythagorean triple.

    You get the hypothenuse (longest side) by the formula a ²+b² = c²

    So plug in the values. a and b are the legs and c the hypothenuse.

    15²+20² = 25²

    225+400 = 625

    625 = 625

    To find the hypothenuse square root the result.

    c = √625 = 25 m

    It is a right triangle.

    Now, the area formula is: (l*l) / 2 = (15*20) / 2 = 300/2 = 150m²
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