Respuesta :
Respuesta:
S = 540 cm²
Explicación paso a paso:
P = 96 cm
L = x + 12
A = x
P = 2L + 2A
96 = 2(x + 12) + 2x
96 = 2x + 24 + 2x
96 = 4x + 24
96 - 24 = 4x
72 = 4x
72
----- = x
4
18 = x
L = x + 12
L = 18 + 12
L = 30
S = L x A
S = 30 cm x 18 cm
S = 540 cm²