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Mathematics 13 Online
OpenStudy (anonymous):

Find the length and width of this rectangle

OpenStudy (anonymous):

OpenStudy (anonymous):

width 23 lenght 16

OpenStudy (anonymous):

any work?

OpenStudy (anonymous):

wat??

OpenStudy (anonymous):

how did u get the answer?

OpenStudy (anonymous):

Let l be the length and w the width then,\[P=2l+2w\]\[78=2(2x-4)+2(2x+3)\]\[78=4x-8+4x+6\]\[8x=80\]\[x=10\]So, \[l=2\times10+3=23\] and \[w=2\times10-4=16\]

OpenStudy (anonymous):

add the two sides and multiply with 2 that is the perimeter equate it with 78 get the value of x use that x to find the lenght and breadth

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