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Mathematics 15 Online
OpenStudy (osgood):

Help please will medal I just need you to check something !!!!!!!!!!!!!!

OpenStudy (osgood):

Here

OpenStudy (osgood):

I think it is 704

OpenStudy (bobo-i-bo):

Hmm, I've got an answer, but not yours... can i see your working? It may be just an error on my part

OpenStudy (osgood):

Here is my work

OpenStudy (osgood):

The formula that I found was perimeter*slant height/2

OpenStudy (osgood):

@freckles

OpenStudy (freckles):

the slanted height is s in your formula

OpenStudy (bobo-i-bo):

Hmmm, the formula does not seem right... So the question is to find (the surface area of the pyramind) - (the surface area of the square), right?

OpenStudy (freckles):

the P part is the perimeter of the square base

OpenStudy (freckles):

so do you know the Perimeter of a square is 4 times one side length of the square

OpenStudy (freckles):

|dw:1459288559715:dw| just add up all of the sides to find the perimeter of the square or use the formula I mentioned

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