juciystar234
The sheet of plywood at the right has a piece cut from one corner.What is the area of the plywood?



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juciystar234
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dw:1347408268242:dw

jiji501
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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.

juciystar234
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That is the closest I could draw

juciystar234
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Haha ok

juciystar234
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Let me try and work it out

asnaseer
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work out the area of a large outer rectangle
then subtract from this the area of the rectangle in the top right corner

asnaseer
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you will need to work these out first:
dw:1347408608107:dw

juciystar234
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Ok im working it out

juciystar234
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So isn't the piece missing a 2 by 3?

asnaseer
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yes :)

juciystar234
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Ok so now what so I do?

asnaseer
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what is the area of the piece that was cut out?

juciystar234
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6

juciystar234
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6ft. I mean

asnaseer
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correct  6 ft^2
now subtract 6 from the area of the original whole rectangle

juciystar234
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would it be 64  6 = 58?

asnaseer
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where did you get 64 from?

juciystar234
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because 4x8 twice from before you cut out that piece of plywood

asnaseer
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why "twice"?

juciystar234
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dw:1347408897668:dw

juciystar234
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Or is it just multiplied once

juciystar234
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like 4x8 once  6

asnaseer
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what is the area of a rectangle with length L and width W?

juciystar234
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Before you cut out the piece?

asnaseer
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I think you may be getting confused with the perimeter of a rectangle which is the total distance all around it.

juciystar234
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Yeah maybe.. :P

asnaseer
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Area of rectangle of length L and width W = L * W
Perimeter of rectangle of length L and width W = 2(L + W)

juciystar234
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So then 80?

juciystar234
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Yeah I forgot how to do this from last year.... :P

juciystar234
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But I think I'm catching on! :)

asnaseer
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so, with the extra acquired knowledge, what will be the original rectangles area (before the piece was cut out)?

juciystar234
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80?

asnaseer
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are you sure  look again and what we said above...

juciystar234
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ok

asnaseer
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what is the length and width of the original rectangle?

juciystar234
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So wasnt it 8x8=64 4x4=16 64+16=80?

asnaseer
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dw:1347409394610:dw

juciystar234
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OHHHHHHHHHHHHHHHH!!! OK!! :D Sooo 32?

asnaseer
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:) that is correct

asnaseer
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now just subtract from this the area of the piece that was cut out

juciystar234
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so? 26?

asnaseer
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peeeeeerrrrfect!

juciystar234
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Yahooo!!!!

asnaseer
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I'm sure with some practice you'll become a maths wizard very soon

juciystar234
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Im in honors im liike 2 grades ahead!!

asnaseer
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that is fantastic  keep up the good work my friend :)

juciystar234
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Thankx you 2

asnaseer
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yw :)