Answer:
The total area of the rectangle is found by counting the total number of 1 cm squares inside the rectangle.
Note: This question is missing some details.
A more complete question is this: Use a ruler to measure the side lengths of the rectangle in centimeters. Mark each centimeter with a point and connect the points to show the square units. Then, count the squares you drew to find the total area.
Explanation:
This method is used to determine area of a rectangle by counting the square unit inside the given rectangle.
For example, if the measurement of the sides of the rectangle is 8 cm and 5 cm respectively. To find the area;
Step 1: Mark out 1 cm points on each side of the rectangle.
Step 2: Connect each of the points.
Step 3: Count the number 1 cm squares within the triangle. The total number of squares gives the area of the triangle.
In this example, the number of 1 cm squares will be found to be 40. So the area of the rectangle is 40 cm squares or 40 cm².