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keliling = 2(p+l)
keliling = 2(98 + 45)
keliling = 2(143)
keliling = 286
maka tali yg dibutuhkan = 286 meter
l= 45m
keliling= ?
jadi cari kelilingnya
keliling=2(p+l) = 2(98+45)=2(143)=286 m
(kalau benar ya ;) )