How big is 5 square feet in inches?

1 foot = 12 inches

5 feet = 60 inches (12 x 5)

so 60 inches x 60 inches = 3600 square inches

so so WRONG

1 foot by 5 feet is 5 square feet

thus 12 inches by 60 inches is 12x60 NOT 60x60

720 square inches is a lot less than your wrong answer 3600

60 inches by 60 inches is 5 ft by 5 ft (25 square feet are 3600)

The question doesnt say a 5-foot square.