Calculate Wallpaper Price: Scaling from 240x360 to 1200x1800 Dimensions

Question

The price of 240X360 wallpaper is 1140. What is the price of 1200X1800 wallpaper?

00:00 Calculate the price of the large wallpaper

00:03 Find the similarity ratio

00:12 According to the sides ratio, we showed that the polygons are similar

00:23 The area ratio equals the similarity ratio squared

00:30 Make sure to square both numerator and denominator

00:39 The payment ratio equals the area similarity ratio

00:53 And this is the solution to the question

28500