A scale model of the new dog park has an area of 128 cm2. The actual dog park will have an area of 8 km2. Find the scale that has been used for the model.
8km^2*scale^2=128cm^2
8*k(10cm)^2*scale^2=128cm^2
scale^2= 128/*8000*100)=1/6250
scale= 1/79 appx