plizzz no 14 pakek cara ya

segitiga sama kaki, berarti
keliling = 88
2(2m-8) + (m+4) = 88
4m - 16 + m + 4 = 88
5m -12 = 88
5m = 100
m = 20

AC = 2m-8
= 2(20) - 8
= 40 - 8
= 32 cm