One leg of a right-angled triangle is 34 larger than the other, and the hypotenuse is 106. Find the area of the triangle.
August 16, 2021 | education
| One leg of a right-angled triangle is 34 larger than the other, and the hypotenuse is 106. Find the area of the triangle.
Let x be the length of one leg, then x + 34 is the length of the other leg.
By the Pythagorean theorem, we compose the equation:
X² + (x + 34) ² = 106²;
x² + x² +68 * x + 34² = 106²;
2 * x² + 68 * x + 1156 = 11236;
2 * x² + 68 * x + 1156 – 11236 = 0;
2 * x² + 68 * x – 10800 = 0; Divide both sides of the equation by 2;
x² + 34 * x – 5400 = 0;
We solve this equation:
x1 = – 90, which does not fit according to the problem statement;
x2 = 56;
56 – the first leg;
56 + 34 = 90 – the second leg.
Answer: 56 and 90.
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