Margot is sewing a ribbon on a seam along the perimeter of a square pillow. The side length of the pillow is 2x2 + 1 inches, and its perimeter is 4 (2x2 + 1) inches. If x = 3.5, how much ribbon does she need?

Question

Mathematics

Nia

31 August, 19:57

Margot is sewing a ribbon on a seam along the perimeter of a square pillow. The side length of the pillow is 2x2 + 1 inches, and its perimeter is 4 (2x2 + 1) inches. If x = 3.5, how much ribbon does she need?

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Answers (1)

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Dania · Answer 1

Given:

side length = 2x² + 1

perimeter = 4 (2x² + 1)

perimeter = 8x² + 4

x = 3.5

perimeter = 8 (3.5²) + 4

p = 8 (12.25) + 4

p = 98 + 4

p = 102 inches

She need 102 inches of ribbon.