Ok, so you do regular multiplication with it, and when you have your final answer, you count the number of places behind the decimal place there are in the original numbers, and put the decimal point there. the answer is 0.049056

4 0

3 years ago

The given shape is a regular pentagon.

svetoff [14.1K]

Answer:

Step-by-step explanation:

Since there are missing data, let's discuss some facts about regular polygons and their angles.

1) The sum of its Interior angles is given by:

$S_i=180^{\circ}(n-2) \therefore \:for\: a\:pentagon\:S_i=180^{\circ}(5-2) =540^{\circ}$

2) Since it is a regular pentagon, each interior angle is congruent:

Each interior angle:

$Interior\:angle=\frac{540^{\circ}}{5} =108^{\circ}$

3) If we trace an outside line, the external angle will be supplemental, i.e.

$m\angle external= 180^{\circ}-108^{\circ} \therefore= 72^{\circ}$

4) If we trace from each diagonal one line segment, in a regular pentagon that will form 3 triangles with one-third of 108º,i.e.,36º

As we can see, the in the picture below

5 0

3 years ago