luas bidang diagonal BDHF adalah...

MAPEL = MATEMATIKA
KELAS = 8
BAB = BANGUN RUANG

Diketahui =
AB = 12cm
BC = 9cm
GC = 5cm

Ditanya = luas diagonal balok?

Panjang HF :
HF = √12² + 9²
HF = √144 + 81
HF = √225
HF = 15cm

Luas diagonal = HF × GC
= 15cm × 5cm
= 75cm²

Semoga membantu