First, convert 45 meters into centimeters. You will get 4500 centimeters. Then, convert the numbers into a fraction form (126/4500). Divide the numerator and denominator by 15 to get 4.2/300. If you then divide them both by 4 you will get 1.05/75. This means that every 1.05 cm on the paper represents 75 cm of the real life lot.
