Find the length of the side of a regular decagon whose perimeter is 80 cm.

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10 cm

6 cm

8 cm

7 cm

answer is C.

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Detailed Solution

A regular decagon is a 10-sided polygon with all sides having an equal length.

To find the length of the side of a regular decagon whose perimeter is 80 cm, divide the perimeter by the number of sides.

Perimeter = 80 cm
Number of sides = 10

Length of each side = Perimeter / Number of sides = 80 cm / 10 = 8 cm

Thus, the length of each side of the given regular decagon is 8 cm.

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