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
tatyana61 [14]
3 years ago
6

ABCDEFGHIJ is a regular decagon with a radius of 25.89 units. Find the area of ABCDEFGHIJ. Round the answer to the nearest tenth

. A. 123.1 square units B. 769.4 square units C. 1,969.7 square units D. 7,878.9 square units

Mathematics
1 answer:
Verdich [7]3 years ago
6 0
Let's call the midpoint of GF M.
MF = 16/2 = 8
KF = 25.89
MK = sqrt(25.89^2 - 8^2)
MK = 24.62
MKF = 8 * 24.62 / 2 = 98.48 square units for one triangle
There are 20 of those triangles that make up the decagon.
Therefore the total area = 20(98.48) = 1969.6 which would be option C
 
You might be interested in
a windowpane is 5.7 Inches by 7.1 inches. what is the distance between opposite corners of the windowpane? if necessary, round t
nikitadnepr [17]

Answer:

the distance is 9.1 inches (please give brainliest)

Step-by-step explanation:

we must use the pythagorean theorem:

5.7^2 + 7.1^2 = c^2

(c being the distance being the two corners)

c^2 = 82.9

c = sqrt(82.9) ≈ 9.1

7 0
3 years ago
X<br> −<br> 3<br> 4<br> =<br> 8<br> Which value of <br> x<br> satisfies this equation?
insens350 [35]
. the answer is x=42
5 0
3 years ago
Need help i dont understand this.
inn [45]
The range is a statistical property that consists of the difference between the biggest and the smallest given number.

In our case, the biggest is 17.3 million and the smallest is 3.3 million:

17.3 - 3.3 = 14.0


The range is 14.0 million acres (option D, 4th option).


Hope it helped,

Happy homework/ study/ exam!
6 0
3 years ago
Read 2 more answers
Which triangles can have two sides of the same lenghth
alisha [4.7K]

An isosceles triangle is a triangle with 2 congruent sides. The congruent sides are called legs and the third side is called the base. So if 2 sides of a triangle have the same length, then we say that the triangle is isosceles.

8 0
3 years ago
What is x equal to in the problem 10+3(x+2)=36? Please show your work.
scZoUnD [109]

Answer:

x = 6 2/3

Step-by-step explanation:

10+3(x+2)=36

10+3x+6=36           Solve inside the parenthesis.

16+3x=36               Combine like terms.

-16       -16                Subtract 16 from both sides.

3x/3=20/3                Divide both sides by 3.

x=6 2/3                     The answer is x= 6 2/3, or 6.66666666666667

5 0
3 years ago
Read 2 more answers
Other questions:
  • Evaluate [3 - (6 - 2(6 - 2)+ 2)]+4.​
    14·1 answer
  • The power P (in watts) generated by a windmill that has efficiency E is given by the formula P = 0.31ED^2V^3, where D is the dia
    8·1 answer
  • Scientists have calculated that the Earth is 454 000 000 000 years old. How many billion years is this?
    8·2 answers
  • The Markdown of $18.99 to 25%
    7·2 answers
  • Does anyone know qusetion 10 and 11?
    12·1 answer
  • A factory can produce small wheels for the mousetrap cars at a rate of 18,000 wheels in 3 hours .What is the unit rate per hour?
    10·2 answers
  • The distance between (2,0) and (5, -1) is
    14·1 answer
  • Which of the ratios below has a unit rate of 50? Select all that apply.
    6·1 answer
  • In the diagram, the measure of angle 6 is 98°.
    15·1 answer
  • What is x=.30(729). explain
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!