Prisma belah ketupat memiliki keliling alas 100cm panjang diagonal 14cm dan tinggi prisma 40cm. Ditanyakan volume prisma dan luas sisi prisma

K = 4s
100 = 4s
s = 100/4
s = 25 cm

1/2.d₂ = √25² - (1/2.d₁)²
1/2.d₂ = √625 - (1/2 × 14)²
1/2.d₂ = √625 - 7²
1/2.d₂ = √625 - 49
1/2.d₂ = √576
d₂ = 24 × 2
d₂ = 48 cm

V = L.alas × t.prisma
V = (1/2 × d₁ × d₂) × 40
V = (1/2 × 14 × 48) × 40
V = (336) × 40
V = 13.440 cm³

L.sisi = (2 × L.alas) + (K.alas × t.prisma)
L.sisi = (2 × 336) + (100 × 40)
L.sisi = 672 + 4.000
L.sisi = 4.672 cm²