bangggg panjang DB?PLIS 20 POIN
[tex]db = \sqrt{ {bc}^{2} - {cd}^{2} } = \sqrt{ {150}^{2} - {120}^{2}} \\ \sqrt{22.500 - 14.400} = \sqrt{8.100} = 90 \: m [/tex]
Penjelasan dengan langkah-langkah:
Teorema Phytagoras
CB^2 = CD^2 + DB^2
DB^2 = CB^2 - CD^2
= (150^2) + (120^2)
= 8100
DB = 90 m
