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Verified answer
Kelas 8 MatematikaBab Teorema Pythagoras
alas² + tinggi² = sisi miring²
30² + (8x)² = (17x)²
900 + 64x² = 289x²
900 = 289x² - 64x²
900 = 225x²
x² = 900/225
x = √4
x = 2
Luas segitiga
= 1/2 . alas . tinggi
= 1/2 . 30 . 8x
= 15 . 8 . 2
= 240 cm²