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A right triangle has perpendicular sides of 9 cm and 12 cm. What is the length of its hypotenuse?एक समकोण त्रिभुज की लंबवत भुजाएँ 9 सेमी और 12 सेमी हैं। उसके कर्ण की लंबाई कितनी है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 15 cm15 सेमी
By the Pythagorean theorem, c² = 9² + 12² = 81 + 144 = 225. Therefore c = √225 = 15 cm, so option C is correct.पाइथागोरस प्रमेय के अनुसार, c² = 9² + 12² = 81 + 144 = 225। इसलिए c = √225 = 15 सेमी, अतः विकल्प C सही है।
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