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
belka [17]
3 years ago
5

Suppose the radius of a circle is 8. What is its circumference? Enter either an exact answer or use pi or use 3.14 for pi and en

ter your answer as a decimal.
Mathematics
2 answers:
sp2606 [1]3 years ago
7 0
Hey there!

In this answer, we will use 3.14 for pi.

When we say circumference, we mean the distance around the circle. That means that we're looking to find the distance around this circle with a radius of 8. The formula for circumfrence is:

2πr = C

However, there's also another formula, which is equivalent:

πD = C

This second formula means that pi times the diameter is equal to the circumference of the circle. Here's why it works:

When you say radius, you mean distance from one side of the circle to the middle. When you say diameter, you mean distance from one side of the circle to the other side of the circle. Therefore, when you multiply radius by 2, you get the diameter. That's why this works. Instead of having the 2πr, you just multiply the 2 and the r to get D, because two times the radius equals the circumference. We'll use that formula.

Since we have the radius, as stated earlier, we need to multiply it by two to get the diameter. 2 times 8 equals 16. Therefore, we have:

C = π(16)
C = 3.14(16)

C = 50.24 units squared.

Hope this helps!
GrogVix [38]3 years ago
4 0
8*3.14=  25.12 * 2= 
Circumference= 50.24
You might be interested in
If < 1 = 125, what is < 7?
nordsb [41]

Answer:

875

Step-by-step explanation:

125 x 7 = 875

5 0
2 years ago
3/10 Divided by 3.7
den301095 [7]

Answer: 3/37

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is this? like the answer im so lost. PLEASE HELP 12 – (2 × 3)
Monica [59]
12 - (2 x 3)
PEMDAS
Parentheses, Exponents, Multiplication/Division, Addition/Subtraction
(2 x 3) = 6
12 - 6 = 6
Your answer is 6.
8 0
2 years ago
Help me plz! Thank you!
saw5 [17]

Answer:

the vertical line test proves that it is not a function because there are two y values for 1 x value

Step-by-step explanation:

5 0
3 years ago
Can someone help me on this
kiruha [24]

Answer:

Step-by-step explanation:

I don’t get it too

7 0
3 years ago
Other questions:
  • When p is false and q is true, then p or q is________ true.
    11·2 answers
  • Ali spends 30% monthly income on food articles, 40% of the remaining on conveyance and clothes and saves 50% of the remaining. I
    6·2 answers
  • Divide then check using multiplcation<br> 1056÷37=
    13·2 answers
  • ALSO THIS ONE PLEASE I WILL MARK AS BRAINLIEST
    8·1 answer
  • in triangle ABC, the sum of the measures of angle A and angle B is 47 degrees. what is the measure of angle C?
    8·1 answer
  • Solve the system of equations using substitution.
    7·1 answer
  • What is the slope of this line
    13·1 answer
  • In a sample of 70 stores of a certain​ company, 62 violated a scanner accuracy standard. It has been demonstrated that the condi
    10·1 answer
  • If you are traveling 543 miles and you know that your car gets 18 miles per gallon of gasoline, approximately how many gallons o
    13·1 answer
  • For every quarter spent, Reggie receives 75 food pebbles to feed the fish at a hatchery. Reggie has thrown 600 food pebbles into
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!