The width of a rectangle is 17 inches. Its perimeter is 102 inches. What is the length of the rectangle?

1 Answer
Jan 6, 2018

#34# in

Explanation:

#P = 2(l+w)#

perimeter = #2# sides of the same length, and #2# of the same width.

#w = 17#
#P = 102#

#2(l+w) = 102#
#2(l+17) = 102#

divide by #2:#

#l + 17 = 51#

subtract #17:#

#l = 34#

length #= 34# inches