Matematika 1. diketahui = persegi panjang ABCD AB = (4x+3) cm BC = (6x-8) cm Keliling ABCD = 50 cm Hitung = x AB=, BC= Luas ABCD soal tentang persegi panjang jangan ngasal pake cara

ricardoklingulv – March 31, 2023

1. diketahui = persegi panjang ABCD
AB = (4x+3) cm
BC = (6x-8) cm
Keliling ABCD = 50 cm
Hitung = x
AB=, BC=
Luas ABCD

soal tentang persegi panjang
jangan ngasal
pake cara

Jawaban:

Keliling = 50cm

50 = 2(panjang + lebar)

50 = 2AB + 2BC

50 = 2(4x+3) + 2(6x-8)

50 = 8x + 6 + 12x - 16

50 = 20x - 10

60 = 20x

x = 60/20

x = 3

AB = 4x+3 = 4(3) + 3 = 12 + 3 = 15

BC = 6x-8 = 6(3) - 8 = 18 - 8 = 10

Luas = Panjang x Lebar

= 15 x 10 = 150cm²

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