Final answer:
To find the area represented by 8 centimeters square on a map with a scale of 1:20000, square the length of one side of the square on the map.
Step-by-step explanation:
To find the area represented by 8 centimeters square on a map with a scale of 1:20000, we need to first convert the scale to a ratio. Since the scale is 1:20000, it means that 1 centimeter on the map represents 20000 centimeters in real life. To find the area, we square the length of one side of the square on the map. Since one side of the square is 8 centimeters, the area is 8 * 8 = 64 square centimeters.