Question

Luas persegi panjang 150 cm2.jika perbandingan panjang dan lebar persegi panjang tersebut 3 : 2,maka persegi panjang tersebut adalah?

Answer 1

L = p.l
150 = 3x . 2x
150 = 6x²
150/6 = x²
25 = x²
x = √25
x = 5 cm

p = 3x
= 3.5
= 15 cm
l = 2x
= 2.5
= 10 cm

Answer 2

P:l = 3:2, maka dapat kita misalkan p = 3x dan l = 2x

150 = 3x . 2x
150 = 6x²
x = √25 = 5

p = 3.5 = 15 cm
l = 2.5 = 10 cm