A rectangle is 12cm longer than its wide. It's perimeter is 68m, how do you find it's length and width?

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Answer 1 · 2018-05-09T22:58:45

Length = 1706cm
Width = 1694cm

Perimeter = 68m = 6800cm

Length = x
Width = 12 + x

Formula for perimeter = #2l + 2w#

#6800 = 2x + 2(12 +x)#
#6800 = 2x + 24 + 2x#
#6800 - 24 = 4x#

#6776/4 = x#

#1694 = x# --> length

Which means length is 1694 cm and width is 1694cm + 12cm = 1706cm