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Verified answer
A=14 mb=30 m
a siku2 = 30-14 / 2 = 8 m
t trapesium = L : 1/2 sisi sejajar
= 330 : 1/2 ( 14+30 )
= 330 : 22
=15 m
sisi miring =√15²+8²
=√225 +64
=√289
= 17 m
K = 2 ( sm ) + jumlah sisi sejajar
= 2( 17)+44
= 34 +44
= 78 m
panjang kawat = 78 x 3 putaran = 234 m
jadi minimal panjang kawat 234 m