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Aug30

# Dimensions: Length, Width, and Height of an Object

In today’s entry, we’re going to talk about length, width, and height as tools to find the dimensions of an object.

Length is a linear measurement, which means we can only use it to measure the distance separating two points.

#### In this case, we’ve measured the length between the tip of the cockpit and the back of the last coach.

However, the objects we use every day are not straight lines, so we can’t measure them in the same way. We need to use several different measurements to work out their dimensions.

For example, if we want to work out the dimensions of the sheet of paper inside this envelope, we need to measure two things: length and height.

#### We’ve taken two measurements from this envelope: length 16 cm and height 8 cm.

Two measurements are still not enough for the majority of the objects around us, because they are three-dimensional bodies. That means that we need three measurements, length, width, and height.

#### We’ve taken three measurements from this box: length 20 cm, width 10 cm, and height 15 cm.

Length, width, and height are measurements that allow us to indicate the volume of geometric bodies. The length (20 cm) and the width (10 cm) correspond to the horizontal dimension. On the other hand, the height (15 cm) refers to the vertical dimension.

We usually express these dimensions by writing them out separated by a multiplication sign. Therefore, when we go to buy a piece of furniture and we want to know its measurements, we can see the following on the box:

170 in (height) x 60 in (width) x 45 in (length)

I hope this entry has helped you learn how to measure the dimensions of objects in the world around you.

Don’t forget that you can register free with Smartick to do exercises involving units of measurement, amongst many other things!

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• Fatima CeesayMar 31 2020, 12:07 PM

This helped me with my work thanks a lot 😍

• annNov 06 2019, 6:24 PM

Sorry for nit-picking ))) two typos that really confused my 6 yo son.

1) “Length, width, and height are adjectives”??
nouns maybe? For kids who just starting to identify parts of speech as part of their basic grammar curriculum, its really confusing,

2) “For example, if we want to work out the dimensions of the sheet of paper inside this envelope, we need to measure two longitudes: the height??? (length you mean, since you are about to introduce height only later on referring to 3-d shapes measurements vs. 2-d.) …

and yet next sentence we are back to length

“We’ve taken two measurements from this envelope: length 16 cm and width 8 cm”

• SmartickNov 08 2019, 3:57 AM

Hi Ann!

Thank you so much for your comment and keen eye.
We have edited the post and hope that your little one finds it easier to understand. 🙂

• MiaSep 02 2019, 4:25 AM

agree much

• Patricia HendricksAug 25 2019, 6:37 AM

Need more exercises for measurement.

• Oscar Javier MurilloJun 16 2019, 2:33 PM

I like this site

• PrashantMay 15 2019, 1:26 AM

Very useful to kids and adults also

• RAMACHANDRANDec 28 2018, 4:05 AM

very useful to kids and help to refresh the basics for adults like me