Tolong di jawab ya plisss?

BD^2 = AD^2 × CD^2
BD^2 = 8^2 × 12^2
BD^2 = 64 × 144
BD^2 = 9216
BD = akar9216 = 96

BC^2 = CD^2 × CA^2
BC^2 = 12^2 × 20^2
BC^2 = 144 × 400
BC^2 = 57600
BC =akar57600 = 240
semoga membantu....