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Area and Volume Videos 38 videos

Volumen de un Cubo
754 Views

Los cubos de hielo no son ruidosos generalmente...pero tienen un volumen de tipo diferente. Este video te enseñará cómo encontrar el volumen de...

Volume
11027 Views

Volume is crucial to our lives. It determines the amount of food we eat, the amount of fluid we drink, and hydraulics, just to to name a few. One o...

Surface Area of Cylinders
14741 Views

Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?

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CAHSEE Math 3.3 Measurement and Geometry 199 Views


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Description:

Measurement and Geometry Drill 3 Problem 3. What is the total area, in square inches of the wooden frame?

Language:
English Language

Transcript

00:03

Here’s a shmoopy question, comin’ at ya…

00:06

An actor who really, really likes the way he looks would like to prominently display one of his headshots.

00:12

He has an 8x10 inch photo that he wants to put into a wooden frame.

00:16

The total dimensions of the headshot and the frame together are 12 in by 14 in.

00:22

What is the total area, in square inches (in2) of the wooden frame?

00:26

And here are the potential answers...

00:31

This question is testing one thing: Do we know the formula for the area of a plane?

00:37

Wrong plane.

00:40

We’ll have to do some subtracting and be sure we totally understand what they are asking.

00:43

So draw a little picture – it’s THIS area that they are asking us to find and to get

00:48

it, we need to subtract the interior area from the bigger exterior area… i.e. the

00:53

picture’s area from the frame’s area.

00:57

The area for the picture is just 8 times 10 or 80 square inches.

01:02

And the area for the frame is 12 times 14… which gets us 168 square inches.

01:09

So to get that inner area-thing here...

01:12

Subtract 80 from 168 and we get 88 or B.

01:18

As in… “Beauty is in the eye of the beholder.”

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