Laura is buying a new table for her dining room. She finds one that she likes, and she estimates that the tabletop measures 7 ft by 4 ft. The tabletop is actually 8 ft by 5 feet. What is the percent error in the estimated area of the tabletop?

Respuesta :

7 × 4 = 28
8 × 5 = 40
28/40 = 0.7
70%