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Marcia will make a frame for her picture. The picture frame will be three times as long as it is wide. The width of the frame will be 8 inches. How much wood does Marcia need for the frame?

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Edufirst

Answer:

  • 64 inches

Explanation:

In this problem, the amount of wood refers to the length of the frame, modeling it as a long piece of wood.

Thus, the amount of wood is equal to the perimeter of a rectangle with dimensions width = 8 inches, and length = 3×8 inches = 24 inches.

The perimeter of a rectangles is 2 × width + 2 × length:

  • 2 × 8 inches + 2 × 24 inches = 16 inches + 48 inches = 64 inches.

Answer:

64 inches

Step-by-step explanation:

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