Question

spiral review

1. select all the rectangles with an area of 12 square u

□ a.
1 unit

Explanation:

Step1: Count grid - squares

Count the number of 1 - unit squares in the rectangle.

Step2: Calculate area

The area of a rectangle is length times width. In a grid of 1 - unit squares, we can find the area by counting the number of squares. The rectangle in option A has 3 rows and 4 columns of 1 - unit squares. So the area $A = 3\times4=12$ square units.

Answer:

A.