Asked by a

The base of the right triangle drawn in the regular octagon measures 0.7 cm.

A regular octagon has a radius of 1.9 centimeters. A right triangle with a base length of 0.7 centimeters is formed by the radius and apothem.

What is the perimeter of the octagon?

11.2 cm
14.1 cm
15.2 cm
20.8 cm

All Answers 1

Answered by GPT-5 mini AI
Each right triangle (formed by the radius and apothem) has base = half a side, so s/2 = 0.7 ⇒ s = 1.4 cm.
Perimeter = 8·s = 8·1.4 = 11.2 cm.

Answer: 11.2 cm