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
Reil [10]
3 years ago
8

Use Euler’s formula to answer question.

Mathematics
1 answer:
NeTakaya3 years ago
8 0

Answer:  The correct option is (C) 38.

Step-by-step explanation:  Given that a polyhedron has 20 vertices and 20 faces.

We are to find the number of edges of the polyhedron using Euler's formula.

<em><u>Euler's formula :</u></em>

For any polyhedron, the number of vertices and faces together is exactly two more than the number of edges.

Mathematically, V − E + F = 2, where V, E and F represents the number of vertices, number of edges and number of faces of the polyhedron.

For the given polyhedron, we have

number of vertices, V = 20,

number of faces, F = 20

and

number of edges, E = ?

Therefore, from Euler's formula

V-E+F=2\\\\\Rightarrow 20-E+20=2\\\\\Rightarrow 40-E=2\\\\\Rightarrow E=40-2\\\\\Rightarrow E=38..

Thus, the required number of edges of the given polyhedron is 38.

Option (C) is CORRECT.

You might be interested in
Is a rhombus a rectangle
11111nata11111 [884]

Answer:Every square is a rhombus, and a rhombus can be a square, if all its angles are 90 degrees. Thus, a rhombus can be a rectangle (if the angles of the rhombus are all 90 degrees), and a rectangle can be a rhombus (if the sides of the rectangle are all equal length).

Step-by-step explanation:

5 0
2 years ago
*Please help!* (There are more than 1 answers)
Lelu [443]
Well, the unit rate in the table is approximately 1.143 (8/7)

So, the only lines which have unit rate in between 1.143 and 2 are Line 3 (1.5) and Line 4 (1.2).
7 0
3 years ago
Read 2 more answers
Is 84 - 74 even or odd​
quester [9]

Answer:

even

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I need help calculating the answer to this ✨<br><br> 9x - 7i &gt; 3(3x - 7u)
Valentin [98]
<h2>Answer:</h2><h2>All real numbers!!</h2><h2>Hope this helps!!</h2>

3 0
3 years ago
What is the value of 13.997x4 to 2 decimal places ?
VARVARA [1.3K]

Answer:

Hence the answer to 2 decimal places becomes 55.99

Step-by-step explanation:

SOLUTION

We want to solve:

13.997×4 to 2 decimal places

Now:

13.997×4=55.988

Now, 55.988 to decimal places, after the decimal point, we count the first two numbers, which are 9 and then 8. Then check the number after the 8, is it up to 5? Yes, it is, because it is 8. Now change the 8 to 1 and add it to that second number after the decimal point, this gives nine.

Hence the answer to 2 decimal places becomes 55.99

5 0
2 years ago
Other questions:
  • Select the number like that matches the expression |-6-(-3)|
    10·1 answer
  • Akira used 10 centimeters to wrap 5 presents. How many presents did Akira wrap if she used 18 centimeters of tape? Solve using u
    9·1 answer
  • First twelve mulitples of 4
    15·2 answers
  • CAN SOMEONE PLEASE HELL ME WITH THIS PROBLEM? THANK YOU!!!
    8·1 answer
  • What is the greatest common factor of 16 and 40?
    9·1 answer
  • It cost Jodi $44.88 to buy 12 gallons of gas. What was the cost per gallon of gas?
    8·1 answer
  • The bill at a restaurant came to $136.40 the patrons decide to leave a 15% tip what was the total tip including the bill
    13·1 answer
  • Pa sagot po please maraming salamat po
    5·1 answer
  • What is the value of the expression below?<br> (3 x 4) - 6] + 4 x 2
    13·1 answer
  • Determine whether the ordered pair (1, 1) is a solution of the inequality. y ≤ -3x+1
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!