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
Marta_Voda [28]
3 years ago
12

Find the area of a circle of radius 4 cm.​

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
4 0

Answer:

Step-by-step explanation:

Area of a circle=πr²

A=π*4²

A=16π

A=50.27 ( rounded to nearest 100th)

You might be interested in
Which of the following points is a solution of the inequality y < -|x|?
Leviafan [203]
C because it is an inequality
5 0
3 years ago
Read 2 more answers
A CD usually sells for $14.00. If the CD is 10% off, and sales tax is 6%, what is the total price of the CD, including tax?
Vikki [24]
10% of 14 =1.4
14-1.4=12.6
6% of 14=0.84
12.6+0.84= 13.45
7 0
3 years ago
it took 3hour and 28 minutes to run 26miles. how many minutes did it take her to run 1 mile if she ran the same rate for the who
wolverine [178]
In order to solve this we can first convert 3h 28m to 208 minutes.
This will make it so we can find how many minutes it took her to run per mile.
The way we do that is by dividing 208 by 26. This leaves us with 8 minutes per mile.

Hope this helped at least a bit!
<3
6 0
3 years ago
Read 2 more answers
URGENT
ludmilkaskok [199]

Answer:

99.7%

Step-by-step explanation:

the standard deviation is 4 minuet but  there is always outliers so thats  why its not 100% of the time and the minutes are  coverd  by the deviation.  

6 0
2 years ago
Read 2 more answers
A cup of coffee which is initially at a temperature of 154∘F is placed in a room which is at a constant temperature of 71∘F. In
Lesechka [4]
Newton's law of cooling is
k (t₁ - t₂) = -ln (T₁ - T∞ / T₂ - T<span>∞)

Use the two data points in the given to find k.

t = 0, T = 154
t = 10, T = 133

Solution:

k(0 - 10) = - ln (154 - 71/ 133 - 71)
-10k = -0.291716
k = 0.02917 or 0.0292

So now find t when T = 100
0.2917 * ( 0 - t) = -ln (154 - 71 / 100 -71)
- 0.02917t = - 1.0515
t = 36. 05 minutes
to the nearest minute t = 36</span>
6 0
3 years ago
Other questions:
  • A polling organization asked a nation-wide random sample of 1600 new brides (those who got married in the past 2 years) the foll
    5·1 answer
  • A monopolist's marginal cost curve shifts up, but the firm's demand curve remains the same and the firm does not shut down. Comp
    15·1 answer
  • Simplify the expression 8^5/3
    8·1 answer
  • System of Equations: Solve for (x,y) given the system of linear equations "X 1 point
    11·1 answer
  • Nathan launches a water balloon vertically from a platform on his roof. The height of the balloon (in feet) is represented by th
    7·1 answer
  • Find the LCD. 9, 12 The LCD is<br><br><br><br> please help and quick!!
    15·2 answers
  • 10. Find the circumference of the circle. Use 3.14 for pi. Round to the nearest unit.
    5·1 answer
  • The slope of the line below is 0.8. Write the equation of the line in point-slope
    11·1 answer
  • Find the surface area of the triangular prism.
    12·1 answer
  • Determine the slope of the line passing through the points (5,6) and (-5,-1)m=____
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!