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
Usimov [2.4K]
3 years ago
13

what is the exact area of a circle with a radius of 12 feet? A. 24π square feet B. 36π square feet C. 121π square feet D. 144π s

quare feet
Mathematics
2 answers:
8_murik_8 [283]3 years ago
6 0

Answer:

Option (d) is correct.

Area of circle =144\pi square feet.

Step-by-step explanation:

Given : Radius of circle is 12 feet

We have to find the area of circle with a radius of 12 feet and choose the correct option from the given options.

We know,

Area of circle =\pi r^2

Where r is radius of circle.

Given radius  of circle is 12 feet

Substitute r = 12 , we have,

Area of circle =\pi (12)^2

Simplify , we have,

Area of circle =144\pi feet²

Thus, Option (d) is correct.

Maksim231197 [3]3 years ago
5 0
The answer is D. 144pie square feet

You might be interested in
Please help me with this question thanks. PLEASE I REALLY NEED HELP ON THIS PROBLEM
arlik [135]

Step One

Find the area of the base

A = s * s

s = 755.5 feet

Area = 755.5^2

Area = 570780.25 square feet.


Step two

Multiply the volume by 3

V = 1/3 B * h

3*V = B * h

V = 85600000

85600000 * 3 = B * h

256800000 = B * h


Step Three

Divide by B

B = 570780.25


256800000 = 570780.25 * h

256800000 / 570780.25 = h

449.91 feet = h

3 0
3 years ago
About 5% of the population has a particular genetic mutation. 300 people are randomly selected.
xz_007 [3.2K]

The standard deviation for the number of people with the genetic mutation is 3.77

<h3>How to determine the standard deviation?</h3>

The given parameters are:

Sample size, n = 300

Proportion that has the particular genetic mutation, p = 5%

The standard deviation for the number of people with the genetic mutation is calculated as:

Standard deviation = √np(1 - p)

Substitute the known values in the above equation

Standard deviation = √300 * 5% * (1 - 5%)

Evaluate the product

Standard deviation = √14.25

Evaluate the exponent

Standard deviation = 3.77

Hence, the standard deviation for the number of people with the genetic mutation is 3.77

Read more about standard deviation at

brainly.com/question/12402189

#SPJ1

7 0
2 years ago
Here is a rectangle ABCD.
lana66690 [7]

Answer:

32%

Step-by-step explanation:

Area of rectangle ABCD = 20 * 30 = 600 Sq cm

After increasing the length and width of the rectangle by 20% and 10% respectively.

New length = 30 + 20% of 30 = 30 + 6 = 36 cm

New width = 20 + 10% of 20 = 20 + 2 = 22 cm

Area of new rectangle = 36*22 = 792 Sq cm

Increase in area = 792 - 600 = 192 Sq cm

Percentage increase in area

= (192/600) *100

= 32%

5 0
3 years ago
Read 2 more answers
A lighthouse keeper has a 10 degrees angle of depression between the horizontal light beam and the line of sight from the ship.
Andrei [34K]
107.75m
This is a trigonometric ratio problem. the angle of depression (10) is opposite the height (19m) and the distance is adjacent to the distance (x). opposite ad adjacent sides to the angle is a tangent problem.
tan \theta = \frac{opp}{adj}
plus in values, we know.
tan (10) = \frac{19}{x}
switch tan(10) and x using the products property.
x = \frac{19}{tan (10)}
plug in to calulator to get answer
x=107.75

4 0
3 years ago
For the diagrams, find the following measures. <br> X= <br> DCB= <br> ABC=
Tasya [4]
To set this up you will set the two angles equal to 180° since it is a straight line
This will make the equation x+6x+19=180
Combine like terms. 7x+19=180.
Subtract 19 from both sides. This will make it 7x=161
Divide both sides by 7. That will make it x=23
Next plug in the x to solve for abc. 7(23)+19. This equals 157

X= 23

Hope this helped :)
8 0
3 years ago
Other questions:
  • What are the coordinates of the x-intercept of the equation -5y=4-2x?
    9·1 answer
  • Solve this2^x=3^(x+1) what are the exact and approximate solutions
    14·1 answer
  • PLEASE HELP FAST<br> SEE BELOW
    9·1 answer
  • Anyone know how to do these?
    11·1 answer
  • 30 points!! please answer fast!!
    15·1 answer
  • Someone help me out please I can’t figure out this question
    9·2 answers
  • The middle school band has a boy to girl ratio of 4:7.
    12·2 answers
  • What is the diameter of a circle with a circumference of 18.84956?
    12·1 answer
  • What over 126 simplified equals 1/21
    10·1 answer
  • Craig went bowling with $25 to spend. he rented shoes for $5.00 and paid $4.00 for each game. What was the greatest number of ga
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!