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12 = 120mm
10,5 = 105mm
8 = 80
Mencari panjang kawat
> Untuk mencari panjang kawat maka digunakanlah rumus kBalok
> Rumus = 4 · (p+l+t)
Penyelesaian
= 4 · (120 + 105 + 80)
= 4 · 305
= 1220mm
= 122cm
= 1,22m
kelas : viii
materi : bangun ruang
panjang kawat yang di butuhkan
= (4×p) + (4× l) + (4× t)
= (4×12) + (4× 10,5) + (4× 8)
= 48 + 42 + 32
= 122 cm