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
morpeh [17]
3 years ago
9

Find the area of a regular decagon with perimeter 100 units. Show all work.

Mathematics
1 answer:
Slav-nsk [51]3 years ago
4 0
A regular polygon has ten (10) equal sides ( since it is regular).
We are given with the perimeter value which is 100 units and the perimeter formula is P = 10a
Solving for a (the side measurement), we have:
100 = 10a
a= 100/10
a =10

We can now proceed in solving the area and the formula is shown below:
Area = 5/2 a√ (5+2√5)
Area = 5/2 * 10√(5+2√5)
Area = 76.94 square units

The answer is 96.94 square units.
You might be interested in
Are two lines that lie in parallel planes always parallel?
zhannawk [14.2K]
Of course not.

-- Take a washable marker, and give your little sister another washable marker.

-- Stand back-to-back in your bedroom, you facing the front wall, and her facing the back wall.

-- When you say 'GO', both of you draw a straight line on the wall.
   Then look at the lines.

-- The front and back walls are parallel planes, but it would be
amazing if the two lines are parallel.  One could even be a
horizontal line and the other a vertical one . . . definitely not parallel. 
7 0
3 years ago
Alejandra drove from Michigan to Colorado to visit her friend. The speed limit on the highway is 70 miles/hour. If Alejandra’s c
vova2212 [387]

Answer:

Alexandra drove 980 miles

Step-by-step explanation:

70×14=980

6 0
2 years ago
2.2.PS-8 Find the value of x when 6 - 4x = 6x - 8x + 8. The value of x is​
Bess [88]

Answer:

X = -1

Step-by-step explanation:

6 - 4x = 6x - 8x + 8

-6.                      -6

-4x = -2x + 2

+2x.   +2x

-2x = 2

divide both sides by -2

x = -1

6 0
2 years ago
the fare for a taxi cab is a $2 flat fee plus additional $1.50 for each mile. which equation represent the total cab fee in doll
inna [77]
1.50x +2=y  Where x is how many miles and y is the total 
5 0
3 years ago
Read 2 more answers
Which of the following expressions is equivalent to 14xy – 28x – 36y + 48? 2(7x – 6)(y – 2)(3y + 4) 2(7x – 6)(y – 2)(3y – 4) 2[7
Zolol [24]

The expression that is equivalent to 14xy – 28x – 36y + 48 is 2[7x(y-2)-6(3y-4)]

<h3>Factorizing expressions</h3>

Factorization is a way of separating the equations into two separate factors.

Given the expression below;

14xy – 28x – 36y + 48

Group

(14xy – 28x) – (36y + 48)

14x(y - 2) - 12(3y-4)

Factor out the value of 2 from both terms

2[7x(y-2)-6(3y-4)]

Hence the expression that is equivalent to 14xy – 28x – 36y + 48 is 2[7x(y-2)-6(3y-4)]

Learn more on factorization here: brainly.com/question/25829061

#SPJ1

7 0
2 years ago
Other questions:
  • Four times a number +3 is the same as 5+ the number
    7·2 answers
  • Cindy went to the carnival with her family. She paid $8 for every 10 rides she rode. She spent a total of $25 on rides. Which eq
    7·1 answer
  • 1. Tom and his best friend Edward are seeking to join a gym. Tom saw on television that Platinum Gym was having a grand opening
    13·1 answer
  • Bonnie is making a dipping sauce. She mixes 150 milliliters of soy sauce with 100 milliliters of vinegar. How much soy sauce doe
    12·1 answer
  • What is the equation for m is between -2 and 5
    6·1 answer
  • State the slope and y intercept of Y=5x=7
    8·2 answers
  • All of the following 1920s writers displayed disillusionment, malaise and turmoil in their works EXCEPT:
    5·2 answers
  • I WILL GIVE BRAINLY IF UR RIGHT
    9·2 answers
  • Real Co. Candy<br> 5 candy bars for $2.49<br> Or<br> Elegant Chocolate<br> 20 candy bars for $8.79
    7·1 answer
  • At many bakeries, there are deals that if you buy twelve donuts, you get a thirteenth one at a discount. Sometimes "13" items is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!