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Introduction to Surface Area and Lateral Area 1800 Views


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00:04

Surface Area and Lateral Area, a la Shmoop.

00:08

In every life, some shapes must fall... and in every math test, you'll be quizzed on numbers.

00:14

Most of the magic in getting to the right answer lies in figuring out exactly what they're asking.

00:18

And some of it has to do with the formulas:

00:21

Here's the basic drill - each shape has a basic formula that goes with it...

00:29

… and like... you have to know that for, say, this razor sharpening crystal pyramid,

00:34

THIS is the base and THIS is the height;

00:37

…and that this line represents the radius of the marble in this formula... 

00:45

…and that this line is base 1 and this is base 2 and… we thank Charmin Ultra light

00:50

for the props here. 

00:52

With lateral area, they’re basically just looking for the total surface area…minus the bases.

00:59

Which is where our toilet paper roll works perfectly, since…it has two holes where

01:03

its bases should be.

01:04

Really, there’s no end to the fun we can have using formulas on our toilet paper roll.

01:09

Seriously. We could spend all day in there.

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