Answer:
12 feet
Step-by-step explanation:
Area of a Rectangle: l × w
84 ft² = l × 7 ft
Length = 84 ft² ÷ 7 ft = 12 feet
Hope this helps.
The pattern is +8. 11 is eight more than 3, 19 is eight more than 11, 27 is eight more 19. Because of this, the next two terms would be 35 and 43.