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
Mrrafil [7]
2 years ago
8

What is the circumference of 4cm

Mathematics
1 answer:
Ivan2 years ago
5 0

Answer:

The formula for the circumference of a circle is C = 2πr or C= πd where r represents length of r and d represent length of diameter. The length of a diameter is 2r which is why C= πd. Using this formula, we know that r= 4cm. Thus, C= 2(4)π = 8π ≈ 25.13 centimeters.

Step-by-step explanation:

You might be interested in
PLEASE HELP GEOMETRY QUESTION
V125BC [204]

Answer: D

Step-by-step explanation:

6 0
3 years ago
Find the area of the regular polygon below and round your answer to the nearest tenth.
stira [4]
The 9-sided polygon will have a central angle between the vertex and the center of one side of 360°/(2*9) = 20°. Then the apothem is
  a = (6 in/2)*cot(20°) ≈ 8.242432 in
The perimeter is 9*6 in = 54 in, so the area is
  A = (1/2)Pa = (1/2)*(54 in)*(8.242432 in) ≈ 222.5 in²
4 0
3 years ago
A noted psychic was tested for extrasensory perception. The psychic was presented with 2 0 0 cards face down and asked to determ
Natasha2012 [34]

Answer:

C. P- value < 0.04 0.05

Step-by-step explanation:

hello,

we were given the sample size, n = 200

also the probability that the psychic correctly identifies the symbol on the 200 card is

p=\frac{50}{200}= 0.25

using the large sample Z- statistic, we have

Z=\frac{p- 0.20}{\sqrt{0.2(1-0.2)/200} }

   = \frac{0.25-0.20}{\sqrt{0.16/200}}

    = 1.7678

thus the P - value for the hypothesis test is P(Z > 1.7678) = 0.039.

from the above, we conclude that the P- value < 0.04, 0.05

3 0
3 years ago
What is the LCM of 3.6 and 4
Ira Lisetskai [31]

Answer:

Step-by-step explanation:

36 / 3.6 = 10

36 / 4 = 9

6 0
3 years ago
Read 2 more answers
If you won the lottery today, and had a choice to receive all the money now, or get the money in the future, what is one big pro
iragen [17]

Answer:

a,b,c,and d..?

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is the product in simplest form? −5/12⋅8/13
    10·1 answer
  • What strategy do you most commonly use to identify a pattern
    9·2 answers
  • 3. A shoe store marks up its merchandise by 8%. What was the selling price of a pair of shoes whose
    14·2 answers
  • Emma bought presents for her mom and her grandmamma for Mother's Day. She bought 1 box of strawberries with 24 strawberries in i
    7·1 answer
  • What is 6/6 in a reduced fraction
    8·1 answer
  • The height of a box that bill is shipping is 4 inches less than the width of the box. the length is 10 inches more than twice th
    7·2 answers
  • What is the answer A B C D
    15·1 answer
  • Raina purchased a prepaid phone card for $25. Long distance calls cost 7 cents a minute using this card. Raina used her card onl
    7·1 answer
  • 15. Work out the<br> area of a<br> rectangle with<br> sides 3.4cm and<br> 4.5cm
    6·2 answers
  • Can someone solve this for me?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!