A=1 b=8 c=8
h = [-8 +-sq root(64 - 4*1*8)] / 2
h = [-8 +-sq root(32)] / 2
h1 = -4 +
<span>
<span>
<span>
2.8284271247
</span>
</span>
</span>
h1 =
<span>
<span>
<span>
-1.1715728753
</span>
</span>
</span>
h2 = -4 -
<span>
<span>
2.8284271247
</span></span>h2 = -<span> 6.8284271247
</span>
Answer:

Step-by-step explanation:
Given that, a <em>regular octagon </em>is to be constructed.
To find:
Each angle in the octagon = ?
Solution:
We know that a regular triangle (polygon with 3 sides) has an interior angle of
.
And a regular quadrilateral (square) has an interior angle of
.
Therefore, formula for interior angle of a regular polygon with
number of sides can be given as:

For an octagon, we have
.
Value of Interior angle in a regular octagon:

Kindly refer to the attached image for the angle of 
Answer:
14 dollars
Step-by-step explanation:
42 / 3 = x amount of dollars
14 = x
so every one sweater costs 14 dollars