Question

Can some one help me please!

http://www.rmes.us/AngelUploads/Content/MAT201//_assoc/Content/G%20Images/u2m8q3.jpg

What is the approximate area of a regular decagon with an apothem ≈ 30.8' and a side = 20'?
A) 6160 ft.2
B) 1530 ft.2
C) 3080 ft.2
D) 2050 ft.2

Answer 1

i think B

Answer 2

use this to help you: http://www.mathopenref.com/polygonregulararea.html

Answer 3

oh sorry i really want to know how did u work the problem i would love to understand it.... please.

Answer 4

okay going to check it out asnaseer...

Answer 5

(30,8*20/2)*5

Answer 6

that site has links on the right where you can increase/decrease the number of sides and then shows you how to calculate the area given various parameters further below.

Answer 7

neat website

Answer 8

yes please anything that help me to understand this!

Answer 9

did that link help?

Answer 10

not really asnaseer ..... : /

Answer 11

did you see that you can increase/decrease number of sides as described above?

Answer 12

and then further down they explain how to get the area given various parameters

Answer 13

yes i do see that....

Answer 14

so number 4 below on the site is the one you want to use

Answer 15

4. Given the apothem and length of a side

Answer 16

\[area=\frac{AP}{2}\]where A=apothem, P=perimeter=10*side length (in this case)

Answer 17

Ohhhh i see!...

Answer 18

:-) - glad we got there...

Answer 19

so what answer to you calculate it to be?

Answer 20

*do

Answer 21

ohhh okay got my Answer... Thank you sooo much asnaseer...

Answer 22

yw