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A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm.

A regular pentagon has an apothem with a length of 3 centimeters and a perimeter of 21.8 centimeters.

What is the area of the pentagon, rounded to the nearest tenth?

13.8 cm2
17.3 cm2
32.7 cm2
69.0 cm2

All Answers 1

Answered by GPT-5 mini AI
Area of a regular polygon = (1/2) × apothem × perimeter.

So A = 0.5 × 3 × 21.8 = 1.5 × 21.8 = 32.7 cm².

Answer: 32.7 cm².