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
asambeis [7]
3 years ago
8

Find the exact (leave pi) and the approximate ( pi = 3.14 ) circumference for each circle

Mathematics
1 answer:
sineoko [7]3 years ago
6 0

Answer/Step-by-step explanation:

a. Circumference (C) = πd

d = 12 cm

π = 3.14

Exact value of C = π*12 = 12π cm

Approximate value of C = 12*3.14 = 37.68 cm

b. Circumference (C) = πd

d = 8 m

π = 3.14

Exact value of C = π*8 = 8π m

Approximate value of C = 8*3.14 = 25.12 m

c. Circumference (C) = πd

d = 6 km

π = 3.14

Exact value of C = π*6 = 6π km

Approximate value of C = 6*3.14 = 18.84 km

d. Circumference = πd

d = 9 ft

π = 22/7

Exact value of C = π*9 = 9π ft

Approximate value of C = 9*22/7 = 28.2857143 ≈ 28.29 ft (nearest hundredth)

e. Circumference = 2πr

r = 4 mm

π = 22/7

Exact value of C = 2*π*4 = 8π mm

Approximate value of C = 2*22/7*4 = 25.1428571 ≈ 25.14 mm (nearest hundredth)

f. Circumference = 2πr

r = 7 mi

π = 22/7

Exact value of C = 2*π*7 = 14π mi

Approximate value of C = 2*22/7*7 = 44 mi (nearest hundredth)

You might be interested in
You spin the spinner and flip a coin. Find the probability of the compound event.
Nitella [24]

Answer:

1/10

Step-by-step explanation:

The probability of flipping heads is 1 out of 2 or 1/2

The probability of getting a 5 on the spinner is 1/5

The probability of getting both is 1/2  *  1/5 = 1/10

You should try this out by listing all the ways this can happen.

Spinner         Coin

1                     H

2                    H

3                    H

4                    H

<em><u>5                    H</u></em>

1                     T

2                    T

3                    T

4                    T

5                    T

There are 10 ways of this problem giving results. Only 1 of them is correct.

5 0
3 years ago
How do you find the y - intercept (explain in sentences)
Aloiza [94]
Find the x-intercept of a given linear equation, plug in 0 for 'y' and solve for 'x'. To find the y-intercept, plug 0 in for 'x' and solve for 'y'. In this tutorial, you'll see how to find the x-intercept and the y-intercept for a given linear equation. Check it out!
7 0
3 years ago
A movie rental company offers a membership plan that costs $10/month and charges $2 to rent each movie. How many movies can a me
Brums [2.3K]

Answer:

See below

Step-by-step explanation:

linear equation: y=2x+10

x=cost per movie rented

10=$10 for the membership

24=2x+10    (24 being total you want to spend)

subtract 10 from each side

14=2x

divide by 2

7=x

He can rent no more than 7 movies if he want to spend $24 or less in the month

8 0
3 years ago
What are the zeros of f(x) = x2 + 3x – 10?
Nady [450]
Step One
Factor f(x)
f(x) = (x + 5)(x - 2)

Step Two
The zeros occur when either (x + 5) = 0 or (x - 2) = 0

x + 5 = 0
x = -5

x - 2 =0
x = 2

Step 3
Record the zeros
(-5,0) or (2,0) <<<<<< answer.
3 0
3 years ago
Alaska has a land area of about 1,700,000 km² Florida has a land area 1/10 the size of Alaska what is the land area Florida
ElenaW [278]
1/10 of 1,700,000 km² is 170,000 km² .
5 0
3 years ago
Other questions:
  • The prices for a loaf of bread and a gallon of milk for two supermarkets are shown below. Sue needs to buy bread and milk for he
    7·1 answer
  • Angela invested $15,000 in a savings account. If the interest rate is 4%, how much will be in the account in 10 years by each me
    11·1 answer
  • Which ordered pair is the solution to the system of equations?
    13·2 answers
  • Some body can help me to find the whole area and tell me how do you get the answer step by step please to understand please I ne
    12·1 answer
  • Consider the following data sets and complete the table of summary data
    12·1 answer
  • 3/10, 1/15, n/30 means that a 3% cash discount is available from day 11 to day 15. î© true
    5·1 answer
  • What is the volume of a cylinder that has the same diameter as a
    9·1 answer
  • PLEASE HELP ASAP I NEED THIS TO PASS 20 POINTS 5 STARS
    10·2 answers
  •  GEOMETRY)
    11·1 answer
  • A basket contains six apples and four peaches. You randomly select one piece of fruit and eat it. Then you randomly select anoth
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!