tolong di jawab ya jgn lupa pakai cara

Bab Bangun Datar
Matematika SMP Kelas VII

jajar genjang
luas = a . t = 250
5x . 2x = 250
 x² = 250 : 10
x = √25
x = 5

jawabannya B

L = a x t
250 = 5x . 2x
10x^2 = 250
x^2 = 250/10
x^2 = 25
x = 5 {B}