IDNLearn.com offers expert insights and community wisdom to answer your queries. Get thorough and trustworthy answers to your queries from our extensive network of knowledgeable professionals.
Answer:
w = 7 inches
Step-by-step explanation:
length = n
width = n/2
Perimeter = 2n + 2(n/2)
42 = 2n + n
42 = 3n
n = 14
width = 14/2 = 7