1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Norma-Jean [14]
3 years ago
11

What is the area of a pentagon using the side length of 4

Mathematics
1 answer:
ehidna [41]3 years ago
3 0
In this equation, n = # of sides
Area = n * (side length)² / 4*tan (180 / n)
Area = 5 * 4² / 4 * tan (36)
Area = 80 / 4 * 0.72654
<span><span><span>Area = 80 / 2.90616 </span> </span> </span>
Area =  <span> <span> <span> 27.5277341922 </span> </span> </span>

<span><span> </span> </span> Source:
http://www.1728.org/polygon.htm



You might be interested in
Elena and Jorge have similar problems and find the same answer. Each determines that the solution to e problem is 24.
Colt1911 [192]

What is the question??

6 0
3 years ago
A fair die with sides numbered 1, 2, 3, 4, 5, and 6 is to be rolled until a number greater than 4 first appears. what is the pro
AnnyKZ [126]
First two rolls have to be 1-4 that is 2/3 chance twice and the third can be 4or 5
2/3*2/3*1/3 + the chance that the fourth is the 5 or 6. 
2/3*2/3*2/3*1/3

So the solution is : P=2/3*2/3*1/3 + 2/3*2/3*2/3*1/3
7 0
3 years ago
Triangle ABC is similar to triangle DEF . The length of AC¯¯¯¯¯ is 12 cm. The length of BC¯¯¯¯¯ is 18 cm. The length of DF¯¯¯¯¯
krok68 [10]
If you make a proportion,
12 18
--- = ---
10 x
when you cross multiply
12x=180
x=15
EF= 15
5 0
3 years ago
Read 2 more answers
A worker at a computer factory can assemble 8 computers per hour.
enyata [817]
25 hours, 8 computers in 1 hour, take 200 computers and divide by 8 to find hours
7 0
2 years ago
ABC is an isosceles triangle in which AC =BC.
aev [14]

Given:

ABC is an isosceles triangle in which AC =BC.

D and E are points on BC and AC such that CE=CD.

To prove:

Triangle ACD and BCE are congruent​.

Solution:

In triangle ACD and BCE,

AC=BC                  (Given)

AC\cong BC

\angle C\cong m\angle C                  (Common angle)

CD=CE                  (Given)

CD\cong CE

In triangles ACD and BCE two corresponding sides and one included angle are congruent. So, the triangles are congruent by SAS congruence postulate.

\Delta ACD\cong \Delta BCE           (SAS congruence postulate)

Hence proved.

3 0
3 years ago
Read 2 more answers
Other questions:
  • ♫ I have a Brainliest♫ Math situation
    10·1 answer
  • A. A batch of 30 parts contains five defects. If two parts are drawn randomly one at a time without replacement, what is the pro
    12·1 answer
  • I just can't figure these questions out... and yes I have taken notes, I just can't figure these answers out. !
    8·1 answer
  • Write an equation in slope intercept form for a line that goes through the point (-9,4) and is perpendicular to line Y=-3x-2
    13·1 answer
  • Your Two-Day-Pass to a theme park is $76. This is $31 less than your uncle's Two-Day-Pass. what is the price of you uncle's pass
    11·2 answers
  • What are the x-intercepts of the graph of y
    14·2 answers
  • The scale of a map is 1 in.:250 miles. City a is 368 miles from city h. To the nearest tenth, how far is its distance on the map
    6·1 answer
  • Ivan draws PQR on the coordinate plane.
    13·1 answer
  • Can someone please help me .. will mark brainliest !
    5·1 answer
  • The class has 13 students. How many possible groups<br> are there?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!