Bangun Ruang Sisi Datar Kelas 8. Tolong bantu saya nomor 17

Bab Bangun Ruang
Matematika SMP Kelas VIII

Prisma alas segitiga siku-siku
AD = BE = CF = 5 m

Luas ABED = 30 m²
AB x BE = 30
AB x 5 = 30
AB = 30 : 5
AB = 6 m

Luas BCFE = 20 m²
BC x CF = 20
BC x 5 = 20
BC = 20 : 5
BC = 4 m

Volume = 1/2 x alas x tinggi x tp
Volume = 1/2 x AB x BC x BE
Volume = 1/2 x 6 x 4 x 5
Volume = 60 m^3