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
Gennadij [26K]
3 years ago
14

Find the area of the regular polygon. Round your answer to the nearest hundredth

Mathematics
1 answer:
Ierofanga [76]3 years ago
5 0

Answer:

Step-by-step explanation:

Use the Pythagorean theorem to find the length of the missing side that is 1/2 the side of the missing heptagon. You have to assume that the figure is a regular heptagon, something you should point out to your teacher. Math really requires well qualified diagrams.

c^2 = a^2 + b^2

c = 2.77

a = 2.5

b = 1/2 the side of the heptagon.

2.77^2 = 2.5^2 + b^2

7.6729 =6.25 + b^2

7.5629 - 6.25 = b^2

b^2 = 1.4229

b = sqrt(1.4229)

b = 1.1928

But the side is twice that long

s = 2.3857

Now draw another line from the side you just found. It will be the same length as 2.77. It's a radius of the circumcircle.

Area of the triangle so formed is

Area = 1/2 * b * h

b = 2.3857

h = 2.5

Area = 1/2 * 2.5 * 2.3857

Area = 2.982

There are 7 such triangles.

Answer: 7 * 2.982

Answer: 20.87

You might be interested in
Which of the following of appropriate units of measure to use when finding the mass of a pencil?
lana [24]

Answer:

Grams

Step-by-step explanation:

Mass is the amount of matter present inside a solid. Kilograms and grams are the units to measure mass of an object.

For pencil, the unit to measure its mass is grams. As its mass is less, we can use smaller unit.

Hence, the correct option is (c) "grams"

4 0
3 years ago
256% of 75 portion please help fast
nasty-shy [4]
192 :) Hope this helps. To calculate this you do 75 TIMES .256% and you get the answer!
6 0
3 years ago
Answer the question as soon as possible
expeople1 [14]

Answer:

  • D. Distributive

Step-by-step explanation:

<u>This is:</u>

  • a(b + c) = ab + ac  - Distributive property

Correct choice is D

6 0
3 years ago
Need to draw an area model to multiply 3x31
Luda [366]
You would do three square in length and 31 in width
6 0
3 years ago
Use the substitution method to solve the system of equations. Choose the correct ordered pair.
motikmotik
Ur gonna have to pick an equation and solve for a variable.

2x - 2y = 6
2x = 2y + 6 ...divide everything by 2 because u want x by itself
x = y + 3

now we sub y + 3 in for x in the other equation
14x - 2y = 78
14(y + 3) - 2y = 78...distribute thru the parenthesis
14y + 42 - 2y = 78...subtract 42 from both sides, cancelling the 42 on the left
        -42          -42
-----------------------
14y - 2y = 36 ...simplify
12y = 36...divide by 12 on both sides, cancelling out the 12 on the left
y = 36/12
y = 3

now , we already know that x = y + 3...and we know y = 3...so sub in 3 for y and solve for x
x = y + 3
x = 3 + 3
x = 6

solution is (6,3)

it is always a good idea to check ur answer by subbing it into one or both of the equations to see if it is correct
2x - 2y = 6......(6,3)...x = 6 and y = 3
2(6) - 2(3) = 6
12 - 6 = 6
6 = 6 (correct)

so yes, ur solution is (6,3)
4 0
3 years ago
Read 2 more answers
Other questions:
  • Given: g ∥ h and ∠2 ≅ ∠3
    14·2 answers
  • 1,534 divided by 26 =?
    12·2 answers
  • Is 2 thirds equivalent to 6 tenths
    7·2 answers
  • What is the area of the triangle?
    14·2 answers
  • Which function can be used to model the monthly profit for x trinkets produced?
    15·1 answer
  • PLEASEEE HELP :)))
    12·1 answer
  • A container contains balls numbered from 1 through 55. A ball is drawn randomly and replaced. Then a second ball is drawn random
    14·1 answer
  • 0.42 in simplist form
    10·2 answers
  • HELP RIGHTTT AWAYYYYY PLSSSSSS
    5·1 answer
  • 3
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!