Answer:
300in²
Step-by-step explanation:
l= 12
w= 9
h= 2
Substitute into the equation
S= 2(lw+ wh + hl)
S= 2( 12x9 + 9x2+ 12x2)
S= 2( 108+ 18 + 24)
S= 2( 150)
S= 300
