Question

Risa is sewing a ribbon around the sides of a square blanket each side of the blanket is 72 inches long how many inches of ribbon will recent need

Answer 1

L = length of side of square square blanket = 72 inches

ribbon is attached on the circumference of blanket. hence

C = length of ribbon attached = circumference of  square blanket

for a square , circumference is given as

circumference of square = 4 * side of square = 4L

hence

C = 4 L

inserting the values

C = 4 x 72

C = 288 inches