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Materi : Geometri Segitiga, Kesebangunan dan Teorema PythagorasPembahasan :
3.
Konsep Pythagoras
NL² = KL² - KN²
NL² = 10² - 6²
NL² = 100 - 36
NL² = 64
NL² = 8²
NL = 8 cm
Konsep Kesebangunan
KN² = MN x NL
6² = MN x 8
36 = 8MN
MN = 36/8
MN = 4,5 cm
Maka :
ML = MN + NL
ML = 4,5 + 8
ML = 12,5 cm
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5.
Konsep Luas Segitiga
Luas PQS = 48
1/2 . QS . PS = 48
1/2 . 8 . PS = 48
4PS = 48
PS = 12 cm
Konsep Kesebangunan
PS² = QS x RS
12² = 8 x RS
144 = 8RS
RS = 18 cm
PR² = RS . QR
PR² = 18 . 26
PR² = 468
PR² = (6√13)²
PR = 6√13 cm