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प्रश्न
Check whether the following measures (in cm) can be the sides of a right-angled triangle or not.
1.5, 3.6, 3.9
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उत्तर
For a right-angled triangle, the sum of squares of two shorter sides must be equal to the square of the third side.
Now, 1.52 + 3.62 = 2.25 + 12.96 = 15.21
Also, (3.9)2 = 15.21
⇒ (1.5)2 + (3.6)2 = (3.9)2
Hence, the given sides form right angled triangle.
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