Bantu jawab ya!!! Please

Teorema Pythagoras

BD^2 = AB^2 + AD^2
BD^2 = 12^2 + 16^2
BD^2 = 144 + 256
BD^2 = 400
BD = √400
BD = 20 cm

BC^2 = CD^2 + BD^2
BC^2 = 15^2 + 20^2
BC^2 = 225 + 400
BC^2 = 625
BC = √625
BC = 25 cm
Jadi, panjang BC adalah 25 cm (C).

*semoga membantu. sukses selalu ^_^