anonymous
  • anonymous
The sheet of plywood at the right has a piece cut from one corner.What is the area of the plywood?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
|dw:1347408268242:dw|
anonymous
  • anonymous
The area of the whole rectangle is 4 x8 = 32 You can now split up your shape into two rectangles. 8 x 2= 16 5 x 4 = 20 20+16 = 36 This makes no sense.
anonymous
  • anonymous
That is the closest I could draw

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anonymous
  • anonymous
Haha ok
anonymous
  • anonymous
Let me try and work it out
asnaseer
  • asnaseer
work out the area of a large outer rectangle then subtract from this the area of the rectangle in the top right corner
asnaseer
  • asnaseer
you will need to work these out first: |dw:1347408608107:dw|
anonymous
  • anonymous
Ok im working it out
anonymous
  • anonymous
So isn't the piece missing a 2 by 3?
asnaseer
  • asnaseer
yes :)
anonymous
  • anonymous
Ok so now what so I do?
asnaseer
  • asnaseer
what is the area of the piece that was cut out?
anonymous
  • anonymous
6
anonymous
  • anonymous
6ft. I mean
asnaseer
  • asnaseer
correct - 6 ft^2 now subtract 6 from the area of the original whole rectangle
anonymous
  • anonymous
would it be 64 - 6 = 58?
asnaseer
  • asnaseer
where did you get 64 from?
anonymous
  • anonymous
because 4x8 twice from before you cut out that piece of plywood
asnaseer
  • asnaseer
why "twice"?
anonymous
  • anonymous
|dw:1347408897668:dw|
anonymous
  • anonymous
Or is it just multiplied once
anonymous
  • anonymous
like 4x8 once - 6
asnaseer
  • asnaseer
what is the area of a rectangle with length L and width W?
anonymous
  • anonymous
Before you cut out the piece?
asnaseer
  • asnaseer
I think you may be getting confused with the perimeter of a rectangle which is the total distance all around it.
anonymous
  • anonymous
Yeah maybe.. :P
asnaseer
  • asnaseer
Area of rectangle of length L and width W = L * W Perimeter of rectangle of length L and width W = 2(L + W)
anonymous
  • anonymous
So then 80?
anonymous
  • anonymous
Yeah I forgot how to do this from last year.... :P
anonymous
  • anonymous
But I think I'm catching on! :)
asnaseer
  • asnaseer
so, with the extra acquired knowledge, what will be the original rectangles area (before the piece was cut out)?
anonymous
  • anonymous
80?
asnaseer
  • asnaseer
are you sure - look again and what we said above...
anonymous
  • anonymous
ok
asnaseer
  • asnaseer
what is the length and width of the original rectangle?
anonymous
  • anonymous
So wasnt it 8x8=64 4x4=16 64+16=80?
asnaseer
  • asnaseer
|dw:1347409394610:dw|
anonymous
  • anonymous
OHHHHHHHHHHHHHHHH!!! OK!! :D Sooo 32?
asnaseer
  • asnaseer
:) that is correct
asnaseer
  • asnaseer
now just subtract from this the area of the piece that was cut out
anonymous
  • anonymous
so? 26?
asnaseer
  • asnaseer
peeeeeerrrrfect!
anonymous
  • anonymous
Yahooo!!!!
asnaseer
  • asnaseer
I'm sure with some practice you'll become a maths wizard very soon
anonymous
  • anonymous
Im in honors im liike 2 grades ahead!!
asnaseer
  • asnaseer
that is fantastic - keep up the good work my friend :)
anonymous
  • anonymous
Thankx you 2
asnaseer
  • asnaseer
yw :)

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