The length of a rectangle is 5 cm less than twice it’s width the perimeter of the rectangle is 26 cm' what are the dimensions ?

1 Answer
Thomas K.
Apr 16, 2018

Width=6 and Length=7

Explanation:

To do this you have to make your own equation
You know that Length is #5# less than twice the width so just write
#2w-5# w being the width
Next you have to know perimeter equation for a rectangle which is #P=2(l+w)#
So plug in since you know P
#26=2(2w-5) + 2w#
Now you have your perimeter equal to your length plus width
#26=4w-10+2w#
#26=6w-10#
#36=6w#
#w=6#
Now you have width to equal #6# and plug into you length equation to find length
#2(6)-5#
#12-5=7#

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