Area of a Part Rectangle - Areas and Part Side Length to Full Side Length (Level 1)

The topics in this unit focus on understanding the concepts of area, perimeter, and side length more comprehensively. Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

Part Rectangle - Areas and Part Side Length to Full Side Length

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.


The full rectangle's area is 48. The area that is filled in is 24. What is the length of the full side?

75100150A_{\text{full}} = 48\\A_{\text{part}} = 24w=?w=4