pakai caranya.......

[tex] \frac{3}{4} \times 24 = 18km(a - b) \: \\ 24 \times 1 = 24km(b - c) \\ \\ jarak \: terpendek \: (gunakan \: teorema \: pythagoras) \\ \\ x = \sqrt{ {18}^{2} \times {24}^{2} } \\ = \sqrt{324 + 576} \\ = \sqrt{900} \\ = 30[/tex]