PQ = AP + BQ = 4cm + 7cm = 11 cm
PQ² = (BQ-AP)² + AB²
11² = 3² + AB²
121 = 9 + AB²
AB² = 121 - 9
AB² = 112
AB = √112 cm
Jadi panjang garis persekutuan luar = √112 cm
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PQ = AP + BQ = 4cm + 7cm = 11 cm
PQ² = (BQ-AP)² + AB²
11² = 3² + AB²
121 = 9 + AB²
AB² = 121 - 9
AB² = 112
AB = √112 cm
Jadi panjang garis persekutuan luar = √112 cm