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### Course: 3rd grade (Eureka Math/EngageNY)>Unit 4

Lesson 4: Topic D: Applications of area using side lengths of figures

# Decomposing shapes to find area: grids

Lindsay finds the area of an irregular shape by decomposing it into 2 rectangles.  Created by Lindsay Spears.

## Want to join the conversation?

• How is this important to us?
• This could be useful to many job purposes. One example is being an architect. Suppose you need to design a house for efficiency and low cost. Part of the house that you are building might be in an irregular shape style. You would have to know the area of it because it could help you put things like a bed inside. If you just randomly make a house with no blueprints or area models, you definitely would mess up. You could make a room too small or forget to place a door. There are many more ways that math can help us in our life, but this is just one of them. Hope this helped! -Johnny Unidas
• i'm confused. why use the hard way?
• becuse there is no easy way
• omg bro
• There only giving me one video thats not the right one?
• Gach Ceann de na cearnoga beaga seo. Irish
• That makes since, of how you do the area
• that figure looks way too sus right?