Answer:
[tex]Length=12 \ units\\Width=3 \ units\\\\\\Area=36\ units^2[/tex]
Step-by-step explanation:
-In a rectangle, the greater dimension is usually dimension is the length and the smaller dimension is the width.
Hence, Emma's rectangle is 12 \ units long and 3 Units wide.
-We the apply the area formula to find the area of her rectangle as:
[tex]Area=Length\times width\\\\=12\times 3\\\\=36\ units^2[/tex]
Hence, the rectangle has an area of 36 sq units
