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Panjang PH = √8²+4² = √64+16 = √80 = 4√5 cm
panjang PC = √(8√2)²+4² = √128+16 = √144 = 12 cm
Dibuat garis tegak lurus dari P ke garis HC. misalkan titik nya adalah X
Jadi Panjang PX = 4√5 x 12 / 8√2 = 48√5 / 8√2 = 6√5 / √2 = 6√10 / 2 = 3√10