Jawaban:
keliling segitiga = s + s + s
S = bilangan aritmatika
jadi s1 = a , s2 = a + 2 , S3 = a + 4
keliling = a + a + 2 + a + 4
96 = 3a + 6
3a = 96 - 6
3a = 90
a = 90/3
a = 30
a + 2 = 30 + 2 = 32
a + 4 = 30 + 4 = 34
2 x luas = a x t
2 x luas = 30 x 32
luas = 960/2 = 480
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Jawaban:
keliling segitiga = s + s + s
S = bilangan aritmatika
jadi s1 = a , s2 = a + 2 , S3 = a + 4
keliling = a + a + 2 + a + 4
96 = 3a + 6
3a = 96 - 6
3a = 90
a = 90/3
a = 30
a + 2 = 30 + 2 = 32
a + 4 = 30 + 4 = 34
2 x luas = a x t
2 x luas = 30 x 32
luas = 960/2 = 480