Ascale model of a rectangular patio is 6 feet long and 3 feet wide. the actual patio is 15 feet long. what is the area of the actual patio?
37.5 square feet
45 square feet
112.5 square feet
270 square feet

the model patio is a smaller, scaled down version of the actual patio.

When you scale something the dimensions get multiplied (scaled up) or divided (scaled down) by the same number.

actual patio length = 15 ft

model patio length = 6 ft

The multiplier to scale up the model is:  

15/6 = 2.5

model  patio width = 3 ft

Actual patio width = 3 * 2.5 = 7.5 ft

Area of actual patio = 15 ft * 7.5 ft = 112.5 ft²

The area of the actual patio is 112.5 square feet, or C