Henry built one garden that is 3 feet wide and 3 feet long. he also built a garden that is 3 feet wide and 6 feet long, and a garden that is 3 feet wide and 9 feet long. how do the areas change?

Let's calculate the areas of all three gardens

First garden

one garden that is 3 feet wide and 3 feet long

Area = length* width = 3 feet * 3 feet = 9 square feet

Second garden

3 feet wide and 6 feet long

Area = 3 feet * 6 feet = 18 square feet

Third garden

3 feet wide and 9 feet long

Area = 3 feet * 9 feet = 27 square feet

It means as we can see as the length increases by 2 times , the area also increases by 2 times every time.