Diketahui sebuah persegi panjang dengan p:l = 4:3 jika kelilingnya 28 cm hitunglah luas persegi panjang tersbut
MathSolver74
Misalkan p = 4x l = 3x K = 2(p + l) 28 = 2(4x + 3x) 14 = 7x x = 2 panjang = 4x = 4(2) = 8 cm lebar = 3x = 3(2) = 6 cm Luas = panjang x lebar = 8 cm x 6 cm = 48 cm²
p = 4x
l = 3x
K = 2(p + l)
28 = 2(4x + 3x)
14 = 7x
x = 2
panjang = 4x = 4(2) = 8 cm
lebar = 3x = 3(2) = 6 cm
Luas = panjang x lebar
= 8 cm x 6 cm
= 48 cm²
jumlah perbandingan = 4 + 3 = 7
p = × 14 = 8 cm
l = × 14 = 6 cm
Luas = 8 × 6 cm² = 48 cm²