tolongg........ pliss masuk surga yg bantu Aamiin............... yg gak bantu msk neraka

6.
misal :
panjang = 5x
lebar = 3x

K = 80 cm
2(p + l) = 80
2(5x + 3x) = 80
2(8x) = 80
16x = 80
x = 80 : 16
x = 5 cm

Panjang = 5x
= 5 x 5 cm
= 25 cm
jawaban D

7.
Dito : abdul = 9 : 5
jumlah angka perbandingan = 9 + 5 = 14
selisih angka perbandingan = 9 - 5 = 4

jumlah kelereng = 14/4 x 28
= 14 x 7
= 98 buah
jawaban D

8.
misal sisi segitiga = a, b dan c
a : b : c = 3 : 4 : 5
misal
selisih angka perbandingan sisi terpanjang dan terpendek = 5 -3 = 2

Keliling = a + b + c = 3 + 4 + 5 = 12

K = 12/2 x 14 cm
K = 6 x 14 cm
K = 84 cm
jawaban C