7) Peggy made a scale drawing of her born using a scale of I centimeters = 3 meters. What is the actual length of her barn If it measure 135 centimeters on the drawing?

To find the actual length of Peggy's barn, you can multiply the length of the barn on the drawing by the scale factor. So, using the scale of 1 centimeter equals 3 meters, the actual length can be calculated as follows: 135 cm x 3 m/cm = 405 meters. Wow, that’s one hefty barn! Remember, when working with scale drawings, it’s easy to mix up your units. Always double-check your scale and make sure you're consistent with measurements. Mistakes often happen when converting units, so keeping everything in the same system until the end can save you a lot of trouble!