ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Geometry and Measurement Videos 36 videos
How long is the line segment connecting the points (-6, 7) and (5, -4)?
Any line that bisects the segment shown above must pass through which point?
Point B is the midpoint of segment AC. The coordinates of A are (-9, 3) and the coordinates of B are (2, -3). What are the coordinates of C?
TSI Math: Using Circumference to Calculate a Circle's Area 45 Views
Share It!
Description:
A circle has an area of 225π square units. What is its circumference?
Transcript
- 00:02
Okay next up sai Math people Here we go A
- 00:04
circle has an area of two hundred twenty five pi
- 00:08
square units what's its circumference Okay if the radius of
- 00:16
a circle is our than its areas pyrrhus square don't
- 00:18
forget that radius thing Their pies around in this formula
Full Transcript
- 00:21
is pi times are squared so we're given pi r
- 00:24
squared is to twenty five pie and weaken solve a
- 00:27
little bit so cross out pie on both sides and
- 00:30
we have our squared to twenty five So square root
- 00:33
of two twenty five is what yes fifteen Well the
- 00:36
circumference of a circle is its perimeter The formulas to
- 00:39
pie are there since we know that our is fifteen
- 00:41
we're good to go It's two pi r is two
- 00:44
pi times fifteen or thirty pie that's the circumference of
- 00:48
the circle thirty pie units and the answer is d 00:00:51.635 --> [endTime] there were shmoop circular lately
Related Videos
Which is the best way to revise and combine sentences 1 and 2?
Where would the following sentence best be placed?
Which of the following is best to insert at the beginning of sentence 8?
Which is the best location for sentence 9?
Which of the following sentences is best to insert between sentences 11 and 12?