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The length of a median of an equilateral triangle is x cm. Find its area

Question

The length of a median of an equilateral triangle is x cm. Find its area

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Solution

Sure, here is the step by step solution:

Step 1: In an equilateral triangle, a median is also an altitude. So, the length of the median (altitude) is given as x cm.

Step 2: We know that in an equilateral triangle, the altitude divides the base into two equal parts. Let's denote each part as a. So, the total length of the base is 2a.

Step 3: We can use the Pythagorean theorem to find the length of the base. In the right triangle formed by the altitude and the half base, the hypotenuse is the side of the equilateral triangle, and it is equal to √(a² + x²).

Step 4: But in an equilateral triangle, the side is also equal to the median, so we have √(a² + x²) = x.

Step 5: Squaring both sides, we get a² + x² = x². Subtracting x² from both sides, we get a² = 0, so a = 0.

Step 6: But a cannot be zero because it is half the base of the triangle. This contradiction arises because we assumed that the triangle is equilateral. Therefore, the given condition is not possible.

Step 7: Hence, the area of the triangle cannot be determined with the given information.

This problem has been solved

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