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Mapel : MatematikaKelas : VIII SMP
Bab : Garis Singgung Lingkaran
Pembahasan :
GSPD² = D² - (R + r)²
GSPD² = 15² - (5 + 3)²
GSPD² = 15² - 8²
GSPD² = 225 - 64
GSPD² = 161
GSPD = √161 cm
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