An electrician plans to install solar panels on a rectangular section of roof with an area of 180 m 2 180m 2 180, start text, m, end text, squared. this width of this section of roof is 7 1 5 m 7 5 1 ​ m7, start fraction, 1, divided by, 5, end fraction, start text, m, end text across. what is the length of this section of roof?