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A regular octagon has an area of 288 square centimeters and an apothem of 12 cm.

What is the length of each side of the octagon?

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Answer:

The formula for the area of a regular octagon is:

A = 2(1 + √2) × apothem^2

So, we can use this formula and the given values to find the length of each side of the octagon:

288 = 2(1 + √2) × 12^2

Dividing both sides by 2(1 + √2), we get:

12^2 = 288 ÷ 2(1 + √2)

Simplifying the right-hand side, we get:

12^2 = 72(1 - √2)

Dividing both sides by 72(1 - √2), we get:

12^2 ÷ 72(1 - √2) = 1

Simplifying the left-hand side, we get:

2 - √2 = 1

Adding √2 to both sides, we get:

2 = 1 + √2

This is not true, so there must be an error in our calculations.

Checking our work, we find that the formula we used for the area of a regular octagon is incorrect. The correct formula is:

A = 2 × (1 + √2) × apothem × side

Using this formula and the given values, we can solve for the length of each side of the octagon:

288 = 2 × (1 + √2) × 12 × side

Dividing both sides by 2 × (1 + √2) × 12, we get:

side = 288 ÷ (2 × (1 + √2) × 12)

Simplifying the right-hand side, we get:

side = 6(√2 - 1)

Therefore, the length of each side of the octagon is approximately 4.83 cm (rounded to two decimal places).

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