Question

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

Explanation:

Step1: Check area and length - width difference for each option

For option 8 by 5: Area = \(8\times5 = 40\), Length - Width = \(8 - 5 = 3\) (not 6, so eliminate).
For option 10 by 4: Area = \(10\times4 = 40\), Length - Width = \(10 - 4 = 6\) (matches both conditions).
For option 11 by 9: Area = \(11\times9 = 99\) (not 40, eliminate).
For option 13 by 7: Area = \(13\times7 = 91\) (not 40, eliminate).

Answer:

B. 10 by 4