Jawabanmu

2014-05-31T19:25:01+07:00
Dik: rusuk (r) = 12 buah
p = 35 cm
jawab :
R x p = 12 x 35 = 420 cm (1 kerangka)

15 kerangka = 15 x 420 = 6300 cm = 63 m

1 batang kawat = 2 meter brti 63 m ÷ 2 m = 31,5 batang kawat ..