Mathematics, 22.02.2021 01:10 MOMMYDORA

The perimeter of an equilateral triangle with sides is 3s. Diana is making a decorative pillow for her living room. The pillow is shaped like a triangle with lace around the edges. Each side of the pillow is 7 inches long. What is the perimeter of the pillow? Write your answer as a whole number or decimal.

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The perimeter of an equilateral triangle with sides is 3s. Diana is making a decorative pillow for h...