Answer:
166.27 m2
Step-by-step explanation:
area of hexagon =
*
where a = length of 1 side
this hexagon is made of 6 equivalent triangle
consider ABC triangle
let AC length be x
<em>AB = 2 * AC = 2x = a</em>

Hence a = 8
<u>hence area of hexagon = </u>
<u>*</u>
<u> = </u>
<u> * </u>
<u> = 166.27 m2</u>
5/9 is closer to 1
Hope this helps!
Answer:256768
Step-by-step explanation:
Answer:
not sure
Step-by-step explanation:
Answer:
C. [21.80, 22.80]
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find M as such

In which
is the standard deviation of the population and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 22.3 - 0.5 = 21.8 hours.
The upper end of the interval is the sample mean added to M. So it is 22.3 + 0.5 = 22.8 hours
So the correct answer is:
C. [21.80, 22.80]