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94 = 2(29 + l)
94 = 58 + 2 l
2 l = 94 - 58
= 36
l = 36 : 2 = 18 cm
La = p×l
= 29 × 18
= 522 cm²
V = La × t
= 522 × 48
= 25.056 cm³
94 = 2.(29+l)
94:2 = 29+l
47 = 29+l
l = 47-29
l = 18 cm
jadi, V.prisma = L alas.t
= p.l.t
= 29.18.48
= 25056 cm kubik