tolong cara nya gimana yah

Bangun Ruang

^ = pangkat

BD^2 = AB^2 + BC^2
BD^2 = 12^2 + 9^2
BD^2 = 144 + 81
BD^2 = 225
BD = √225
BD = 15 cm

L BDHF = BD x CG
= 15 x 5
= 75 cm^2 (C).

*semoga membantu. sukses selalu ^_^