spigirl2010 spigirl2010

26-10-2016
Mathematics

contestada

A regular decagon has a radius of 8 cm. What is the approximate area of the decagon? Recall that a decagon is a polygon with 10 sides.

A) 188 cm^2
B) 198 cm^2
C) 304 cm^2
D) 375 cm^2

Respuesta :

Ruilin0715 Ruilin0715

04-02-2021

Answer:

The anwer is A) 188cm^2

Step-by-step explanation:

the area formula using radius is

r^2sin(360/n)

a=---------------------

2

a=64sin(360/10)

-----------------------

2

a=188

Answer Link

harleygilman7 harleygilman7

04-02-2021

Answer:

A is the correct answer

Step-by-step explanation:

Answer Link

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