(12) (1 ft)(2 ft) + (12)(1 ft)(2 ft) + (4 ft)(2 ft)

(12)(1 ft)(2 ft) + (12)(1 ft)(2 ft) + (4 ft)(2 ft)

= (24 ft²) + (24 ft²) + (8 ft²)

= 24 ft² + 24 ft² + 8 ft²

= 56 ft²