The Meaning of Area & Perimeter

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Area and perimeter are two measurements that relate to a particular amount of space. Learn the meaning of area and perimeter with help from a mathematics educator in this free video clip.

Part of the Video Series: Mathematics Lessons
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Video Transcript

Hi, I'm Jimmy Chang and we're here to talk about the meaning of area and perimeter. Now, they're both similar in that they both address two-dimensional objects; but, the definitions of both are actually very very different. So, let's go for a brief discussion as to what each of them means. Now, with the perimeter, we're often talking about the distance around a two-dimensional object. So, for example, if you have a rectangle, we're talking about in terms of perimeter, the distance around the rectangle. So, that's what perimeter is, the distance around a particular shape. So, in this case, as you can imagine, the perimeter is going to be twice the length plus twice the width. Now, that applies again to all shapes when it comes to perimeter, the distance around the two-dimensional shape. Area is going to be a little bit different because the area refers tot he amount of space inside the two-dimensional object. Oftentimes we talk about area of the house, area of a yard and things like that, we're talking about how much space is actually inside that particular shape. So, so, using the rectangle as we had before for perimeter, we're talking about how much space is inside the rectangle itself. So, perimeter we're talking about the outside; area, we're talking about the inside. And as you might remember from before, the area of a rectangle is length times width. And the only, other thing we want to talk about is with perimeter, your final units tend to be linear units like feet, inches, meters, what have you; whereas an area, because you're talking about the amount of space, you're measuring two-dimensional at a time, your answer in units when it comes to area would be in square units like square inches, square feet, things like that. So, I'm Jimmy Chang and that's the meaning of area and perimeter.

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