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Geometry and Measurement Videos 36 videos
The point (4, -10) is reflected across the line y = x. What are the coordinates of the reflected point?
Rotating the above figure 90° clockwise about the point (2, -5) results in which of the following?
Kendra took the line y = -3x + 2 and shifted it 5 units right and 1 unit up. What is the equation of the resulting line?
TSI Math: Solving for the Diagonal of a Rhombus 19 Views
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Description:
A rhombus has an area of 72 square meters and a diagonal of 18 meters. What is the length of the other diagonal?
Transcript
- 00:02
All right Mash bumpers Rhombus has an area of seventy
- 00:05
two square meters in a diagonal of eighteen meters What
- 00:08
is the length of the other diagonal All right well
- 00:16
here's the shape of a rhombus Look at its territory
- 00:18
embrace it love it that's your rhombus friend there two
Full Transcript
- 00:21
formulas for the area of the rhombus But we want
- 00:23
to use the one that wasn't late for lunch Since
- 00:26
we're given the length of one of the diagonals We
- 00:28
want the area formula that uses a rhombus diagonals in
- 00:31
that way we can substitute in our own known values
- 00:34
and find the value of the unknown diagonal right So
- 00:37
that area formula is area is one half d one
- 00:41
in times day to there find the missing diagon all
- 00:43
through substitution You know each diagonal angle one day going
- 00:46
to well just plug in the numbers because well they
- 00:48
just give him to us So we got seventy two
- 00:50
square meters is one half times eighteen meters times diagonal
- 00:54
too and well we can just bang that out to
- 00:56
be nine Divide out both sides by nine we get
- 00:59
eight meters is diagonal two that's it So the second
- 01:03
diagonal of the rhombus is eight meters long It's a 00:01:06.376 --> [endTime] in war shmoop
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