Jawab pake caranya nomor 5,6,7

Jawab pake caranya nomor 5,6,7

Jawaban Terkonfirmasi

Soal nomer 5
$CD = sqrt{17 ^{2} - 8 ^{2} } \ CD = sqrt{289-64} \CD = sqrt{225} \CD = 15$
luas ACBD = 2 x luas segitiga
   = 2 x 1/2 x a x t
   = a x t
   = 8 x 15
   = 120 cm²

jawaban soal nomer 6
$AB = sqrt{12 ^{2} + 9 ^{2} } \ AB = sqrt{144 + 81} \AB = sqrt{225} \AB = 15$
LUAS = a x t
   = 9 x 12
   = 108
luas layang-layang = 108
d1 x d2 : 2 = 180
15 x d2 : 2 = 108
   15d2 = 108 x 2
   15d2 = 216
   d2 = 216/15
   d2 = 14,4
maka pajang CD = D2 yaitu 14,4 cm