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
Svetach [21]
2 years ago
11

The diagram below shows a square inside a regular octagon. The apothem of the octagon is 15.69 units. To the nearest square unit

, what is the area of the shaded region? 13 U 13 U Apothem length: 15.69 O A. 1463 square units B. 816 square units C. 647 square units OD. 764 square units ​

Mathematics
2 answers:
motikmotik2 years ago
8 0

perimeter of octagon

  • 8(13)
  • 104units

Now area

  • perimeter×apothem /2
  • 104(15.69)/2
  • 52(15.69)
  • 815.88units²

Area of square

  • 13²
  • 169units²

Area of shaded region

  • 815.88-169
  • 646.88units²
  • 647units²
Musya8 [376]2 years ago
3 0

Answer:

C.  647 square units

Step-by-step explanation:

To find the shaded area, subtract the area of the unshaded square from the area of the octagon.

<u>Area of the octagon</u>

\textsf{Area of a regular polygon}=\dfrac{n\:l\:a}{2}

where:

  • n = number of sides
  • l = length of one side
  • a = apothem

Given:

  • n = 8
  • l = 13
  • a = 15.69

Substitute the given values into the formula and solve for A:

\implies \textsf{Area}=\sf \dfrac{8 \cdot 13 \cdot 15.69}{2}

\implies \textsf{Area}=\sf \dfrac{1631.76}{2}

\implies \textsf{Area}=\sf 815.88\:\:square \:units

<u>Area of the square</u>

\implies \textsf{Area}=\sf 13^2=169 \:\:square \:units

<u>Area of the shaded region</u>

= area of the octagon - area of the square

= 815.88 - 169

= 646.88

= 647 square units (nearest square unit)

You might be interested in
What’s the length of the missing leg?!
posledela

<em>So</em><em> </em><em>the</em><em> </em><em>right</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>1</em><em>2</em><em> </em><em>m</em><em>.</em>

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em>

<em>H</em><em>ope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em>

<h3><em>Good</em><em> </em><em>luck</em><em>.</em><em>.</em><em>.</em></h3>

<em>-Pragya~</em><em>~</em>

8 0
3 years ago
The radius of a nitrogen atom is 5.8*10^-11 meters, and the radius of a beryllium atom is 1.12*10^-10 meters. Which atom has a l
Burka [1]
Nitrogen Radius = 5.8 x 10⁻¹¹ m

Beryllium Radius = 1.12 x 10⁻¹⁰ m

Let's find the quotient of N/Be :

(5.8x10⁻¹¹)/(1.12x10⁻¹⁰). But 10⁻¹¹/10⁻¹⁰ = 10⁽⁻¹¹⁺¹⁰⁾ = 10⁻¹ = 1/10 = 0.1

→ (5.8/1.12).(0.1) = 0.58/1.12 = 0.518.

Conclusion: the radius of Be is almost double than the radius of N
5 0
3 years ago
. A hotel elevator is on the 14th floor. If it goes up 5 floors, then goes down 8 floors, what floor is it now on?
vampirchik [111]
14+5= 19; 19-8=11. the hotel elevator is now on the 11th floor
4 0
3 years ago
a company rents out 18 food booths at the county fair. The fee for a food booth is $175 plus $7 per day. The fee for a game boot
aliya0001 [1]

Answer:

18 food booths initial costs are $(3,150 + 7d)

Step-by-step explanation:

8 0
2 years ago
Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a&gt;1
Tamiku [17]

Answer:

<h2>4(5x + 6)</h2>

Step-by-step explanation:

5(6x+4)-2(5x-2)\qquad\text{use distributive property}\ a(b+c)=ab+ac\\\\=(5)(6x)+(5)(4)+(-2)(5x)+(-2)(-2)\\\\=30x+20-10x+4\qquad\text{combine like terms}\\\\=(30x-10x)+(20+4)\\\\=20x+24

20x=4\cdot5x\\\\24=4\cdot6\\\\20x+24=4(5x+6)

6 0
3 years ago
Other questions:
  • The function f(x) = (x - 4)(x - 2) is shown.
    10·1 answer
  • Determine the number of solutions for the equation: -6(24x+18)=43(5+5x).
    13·2 answers
  • Explain how to estimate the quotient using compatible numbers. 27 and two-thirds divided by 3 and StartFraction 9 over 10 EndFra
    14·2 answers
  • Help!!! I don't know this ​
    13·2 answers
  • 2) Write an integer to best describe<br> the following situation: 6 feet below<br> sea level
    9·1 answer
  • Jamie ran 1/5 of a relay. She ran 3/4 of a mile. How long was the relay?
    9·1 answer
  • 5 poin
    14·2 answers
  • List following fractions in ascending order<br> 5/6 15/36 3/18 5/9 31/36
    11·1 answer
  • Joseph drives 125 miles in 2.1 hours. At the same rate, how far will he be able to travel in 6 hours?
    12·1 answer
  • You have at most $75 to spend on books and music. You want to spend less than $20 on music and no more than $60 on books. Which
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!