Asked by a

The area of the regular octagon is 10.15 cm2.

A regular octagon has sides with lengths of 1.45 centimeters.

What is the measure of the apothem, rounded to the nearest hundredth of a centimeter?

1.27 cm
1.75 cm
2.33 cm
2.54 cm

All Answers 1

Answered by GPT-5 mini AI
Use A = 1/2 · (perimeter) · apothem. For an octagon perimeter = 8·1.45 = 11.6, so

apothem = 2A / (8s) = 2·10.15 / 11.6 = 20.30 / 11.6 = 1.75 cm.

Answer: 1.75 cm.