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EF = 28 + 132 / 10
EF = 16 cm
jadi, alas nya 7 cm.
sisanya akan (22-7) =15 cm.
garis EF akan terpotong juga, jadi EF = (7 + p)
jadi,
6/10 = p/15
90 = 10p
p = 90/10
p = 9 cm
maka,
EF = 7 + p
EF = 7 + 9
=16 cm