Mathematics · Mensuration
एक पिरामिड के एक त्रिकोणीय फलक (फेस) की भुजाएँ 13 सेमी, 14 सेमी और 15 सेमी हैं। हेरॉन के सूत्र का उपयोग करके इस फलक का क्षेत्रफल ज्ञात कीजिए।
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