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Circumference Videos 9 videos
It's super useful to be able to find the distance around stuff. Like when you’re being pursued by authorities while running around the base of an...
SAT Math 1.1 Geometry and Measurement. What is the circumference of the circle?
SAT Math 10.2 Geometry and Measurement. How far does a point on the outside of the circle travel?
GED Math 3.2 Measurement 218 Views
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Description:
In this GED math problem, figure out which part of the circle has a measurement of 8 units when the area is given.
Transcript
- 00:00
Thank you We sneak in and here's your shmoop du
- 00:05
jour brought to you by circles whenever you need him
- 00:08
to be around All right A circle has an area
- 00:13
of sixteen pi square units Not blank of the circle
- 00:17
is eight units The what of the circle is a
Full Transcript
- 00:21
unit And why is it bragging about it to the
- 00:26
other circle It's Not cool Well we've got three options
- 00:29
Radius diameter fan circumference Hard to find any of these
- 00:36
three You have to start by finding the radius So
- 00:39
let's start by finding the radius area of a circle
- 00:43
is always pi Times are square with our being radius
- 00:47
Okay so we know that sixteen pie which were given
- 00:50
in the problem equals pi r squared But we confide
- 00:54
both sides My pie to get that sixteen equals r
- 00:58
squared and we'll take square root of sixteen which is
- 01:02
four Oh yeah Four equals are well for eight Unless
- 01:08
there's something seriously screwed up about her finger We know
- 01:11
that a radius is half of a diameter and force
- 01:15
half of eight though putting two and two together Or
- 01:17
in this case for for we can deduce that the
- 01:20
circle's diameter eyes eight units Oh although it sure would 00:01:25.714 --> [endTime] be nice That learned to show some humility Yeah
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