Pertanyaan :
Jawaban :
Lebar = x
p – 7 = x
p = x + 7
p – 7 = x
p = x + 7
keliling = 2(p + l)
80 = 2(x + 7 + x)
80 = 2(2x + 7) ====> (B atau D)
keliling = 2(p + l)
80 = 2(x + 7 + x)
80 = 2(2x + 7) ====> (B atau D)