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17 March, 07:46

The area of a regular octagon is 35 cm2. What is the area of a regular octagon with sides five times as long?

A. 625 cm2

B. 875 cm2

C. 175 cm2

D. 245 cm2

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Answers (1)
  1. 17 March, 11:07
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    The answer is B. 875 cm2. This is calculated by taking 35 * 5 * 5. The relationships between areas and side lengths of similar shapes is a squared relationship. Since the answer wanted 5 times, we do 5 times 5 and multiply that by our current area.
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