Question

Find the area of the regular pentagon

Answer 1

`A = 43.1\ cm^2`

Explanation:

Step 1: Determine the area

`A=(1)/(4)\sqrt{5(5+2√(5))}*a^2`

`A=(1)/(4)\sqrt{5(5+2√(5))}*(5\ cm)^2`

`A = (1)/(4)*6.8819*25\ cm^2`

`A = 43.1\ cm^2`

Answer:
`A = 43.1\ cm^2`