A rectangle has an area of 40 square units. The length is 6 units greater than the width.
What are the dimensions of the rectangle?
8 by 5
10 by 4
11 by 9
13 by 7

10 by 4

Step-by-step explanation:

since the length has to be 6 units greater than the width, the dimensions must be 6 units apart.

1: 8 units - 5 units = 3 units (not 6 units)

2: 10 units - 4 units = 6 units

3: 11 units - 9 units = 2 units (not 6 units)

4: 13 units - 7 units = 6 units

options 2 and 4 gives six. since the area has to be 40 units², the dimensions multiplied must equal to 40 units².

2: 10 units × 4 units = 40 units²

4: 13 units × 7 units = 91 units² (not 40 units²)

the set of dimensions that fits both requirements is option 2: 10 by 4.