Doris uses 8 square pieces of fabric to make one scarf.Each side of a square piece of fabric is 1/4 foot in length.Doris can buy large pieces of fabric that are 1/4 foot long and 2 feet wide.How many large pieces of fabric should she buy to make 7 scarves?

Answer:7 pieces Step-by-step explanation:Given that,length of square pieces of fabric = 1/4 footDoris used 8 of these piece so total fabric used   8 (l²)= 1/2 foot²1 scarf area =  1/2 foot²7 scarf area = 7* 1/2 foot²                     = 7/2 foot²When Doris uses piece of fabric that is 1/4 by 2 foot area of one piece of that fabric = 2 * 1/4                                                     = 2/4                                                     = 1/2foot²So,number of pieces required to make 7 scarfs = (7/2) / (1/2)                                                                              = 7  pieces