Question

Matematika cari panjang alas jajar genjang. jawab pakai caranya!!!

Answer 1

PK

Jajar genjang
a = t + 4  → t = a - 4
L = 96 cm²
a = __ ?

luas
  L = a t
96 = a (a - 4)
96 = a² - 4a
  0 = a² - 4a - 96 = 0
  0 = (a - 12) (a + 8)
a = -8 [TM]  atau    a = 12  ←

alas jajar genjang tersebut a = 12 cm