perbandingan panjang dan lebar 2:5 jika luas 40cm kuadrat berapa lebar persegi panjang tersebut

Mis : p = 2x dan l = 5x
Maka
2x . 5x = 40
10x^2 = 40
x^2 = 40/10 = 4
X = 2

Dit : lebar = 5x = 5.2 = 10 cm

L = pl
40 = 2x × 5x
40 = 10x²
x² = 40/10 = 4
x = √4 = 2

l = 5x = 5×2 = 10