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24cmkuadrat= JTPkuadrat - (12-5)kuadrat
576cm= JTPkuadrat - 7cmkuadrat
576cm= JTPkuadrat - 49cm
JTPkuadrat= 576cm + 49cm
JTPkuadrat= 625cm
JTP= akar dari 625cm
JTP= 25cm
24cm = √p2 - (12-5)2
24cm = √p2 - (7)2
24cm = √p2 - 49cm
24 pangkat dua = p2 - 49
576 +49 = p2
625 = p2
p=√625 = 25 cm.
p2= jarak titik pusat
sl=singgung luar