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Area and Volume Videos 38 videos
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 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...
ACT Math: Plane Geometry Drill 2, Problem 4. What is the surface area of a sphere with radius = 6?
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?
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?
Full Transcript
- 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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