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Who wants to be a millionaire? In this video, learn about compound interest, interest rates, and the compound interest formula. You'll be buying th...
ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?
We don't like knocking people down to size, but we do like simplifying radicals. Join us?
Introduction to Surface Area and Lateral Area 1802 Views
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Transcript
- 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...
Full Transcript
- 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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