Answer:
Certainly, here's an illustration:
----------------------
| |
2cm | |
| | 12cm
| |
----------------------
<---- ¾ of 12cm --->
(9cm - 2cm)
= 7cm
In this illustration, the rectangle is represented by a box with a length of 12cm and a width of 7cm. The width is calculated by taking ¾ of the length (which is 9cm) and subtracting 2cm from it. The dimensions of the rectangle are shown inside the box, with the length indicated by the vertical line and the width indicated by the horizontal line.