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Pythagoras ungleichseitiges Dreieck mit Umkreisradius
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Lösung:
64² – x² = 69² – (72 – x)²
4096 – x² = 4761 – (5184 – 144x + x²)
4096 – x² = 4761 – 5184 + 144x – x²
4096 – x² = – 423 + 144x – x² / + x²
4096 = – 423 + 144x / + 423
4519 = 144x / : 144
x = 31,38cm
3. Einsetzen in die pythagoreische Formel:
hc² = a² – x²
hc = √(64² – 31,38²)
hc = 55,78 cm
A: Die Höhe hc beträgt 16,46 cm.
A = c * hc : 2
A = 72 * 55,78 : 2