Penyelesaian:

••Ⴆαɳɠυɳ ɾυαɳɠ 1 (limas persegi)

V= ⅓ × s × s × t∆

= ⅓ × 6 × 6 × 4

= 12 × 4

= 48 cm³

Lp= (2 × a × t) + (s × s)

= (2 × 6 × (√t∆/4² + (s/6÷2²))) + (6 × 6)

= (12 × (√16 + 9)) + 36

= (12 × (√25)) + 36

= (12 × 5 ) + 36

= 60 + 36

= 96 cm²

••Ⴆαɳɠυɳ ɾυαɳɠ 2 (persegi panjang)

V= p×l×t

= 6×6×8

= 288 cm³

Lp= 2 × ((p×l) + (p×t) + (l×t))

= 2 × ((6×6) + (6×8) + (6×8))

= 2 × (36 + 48 + 48)

= 2 × 132

= 264 cm²

luas permukaan keduanya: 96 + 264 = 360

volume keduanya: 288 + 48 = 336

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