Q.8

If a scale model of a car has a scale factor of 1/30 What is the actual length of the car if the model is 4 inches long?

What is the scale factor of a new picture that had its dimensions enlarged from 5x3 to 7.5x4.5

If a cockroach is 5cm long and we take a picture of it and show it on a projector with a scale factor of 50, how big is the projector image?

A map of Edmonton shows 10km for every 0.2m. What is the scale factor of the map?