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
Talja [164]
3 years ago
15

A circular pond has a radius of 3 feet. What is the approximate distance around the edge of the pond?

Mathematics
2 answers:
Alla [95]3 years ago
5 0

Answer:

19

Step-by-step explanation:

enyata [817]3 years ago
3 0

Answer:

C=6π=18.84 ( if π=3.14)

Step-by-step explanation:

distance around the edge of the pond means the circumference of the circle=

C=2πr

C=2π(3)

C=6π=18.84 ( if π=3.14)

You might be interested in
Can you help me pls ?
Leno4ka [110]

Answer:

More than 1/2.

Step-by-step explanation:

1/2 in decimal form is 0.5, and since 0.7 is greater than 0.5, that means it is greater than 1/2.

7 0
3 years ago
Read 2 more answers
A rectangular field with one side along a river is to be fenced. Suppose that no fence is needed along the river, the fence on t
Andreas93 [3]

Answer:

a) Side Parallel to the river: 200 ft

b) Each of the other sides: 400 ft

Step-by-step explanation:

Let L represent side parallel to the river and W represent width of fence.

The required fencing (F) would be F=L+2W.

We have been given that field must contain 80,000 square feet. This means area of field must be equal to 80,000.

LW=80,000...(1)

We are told that the fence on the side opposite the river costs $20 per foot, and the fence on the other sides costs $5 per foot, so total cost (C) of fencing would be C=20L+5(2W)\Rightarrow 20L+10W.

From equation (1), we will get:

L=\frac{80,000}{W}

Upon substituting this value in cost equation, we will get:

C=20(\frac{80,000}{W})+10W

C=\frac{1600,000}{W}+10W

C=1600,000W^{-1}+10W

To minimize the cost, we need to find critical points of the the derivative of cost function as:

C'=-1600,000W^{-2}+10

-1600,000W^{-2}+10=0

-1600,000W^{-2}=-10

-\frac{1600,000}{W^2}=-10

-10W^2=-1,600,000

W^2=160,000

\sqrt{W^2}=\pm\sqrt{160,000}  

W=\pm 400

Since width cannot be negative, therefore, the width of the fencing would be 400 feet.

Now, we will find the 2nd derivative as:

C''=-2(-1600,000)W^{-3}

C''=3200,000W^{-3}

C''=\frac{3200,000}{W^3}

Now, we will substitute W=400 in 2nd derivative as:

C''(400)=\frac{3200,000}{400^3}=\frac{3200,000}{64000000}=0.05

Since 2nd derivative is positive at W=400, therefore, width of 400 ft of the fencing will minimize the cost.

Upon substituting W=400 in L=\frac{80,000}{W}, we will get:

L=\frac{80,000}{400}\\\\L=200

Therefore, the side parallel to the river will be 200 feet.

4 0
3 years ago
Find the theoretical probability of rolling a number cube labeled 1-12 and<br> it landing on 7.
Rashid [163]

Answer:

1/12

Step-by-step explanation:

There are 12 sides, and 7 is one of them. Therefore, there is a 1/12 chance of it landing on that side if it is a fair cube.

3 0
3 years ago
If the radius of a circle is 9 cm, how long is the diameter
Anika [276]

Answer:

18 cm

Step-by-step explanation:

3 0
3 years ago
Angle M has a measure between 0° and 360° and is coterminal with a –620° angle. What is the measure of angle M?
OleMash [197]

Answer:

100 or A

Step-by-step explanation:

i hope this is what you were looking for ;)

7 0
2 years ago
Other questions:
  • Why is 4 the smallest composite number 
    5·1 answer
  • Solve this linear equation <br> 2(x+6)&lt;3x+8
    15·1 answer
  • Five times the difference of twice a number and three, decreased by the sum of the number and eight, equals 13.
    8·1 answer
  • How do I get my answer to this question
    7·2 answers
  • N = 3st^4- 5sv solve for v
    14·1 answer
  • A line that passes through the origin also passes through the point (6,2). What is the slope of the line?
    12·1 answer
  • Please help I’m confused
    9·1 answer
  • If the average of x and y is 11 and the average of x, y and z is 5, what is the value of z? ​
    8·1 answer
  • A hairstylist charges $15 for an adult haircut at nine dollars for a child haircut she wants to earn at least $360 and cut a max
    7·2 answers
  • The sides of a triangle are in the ratio 2:3:4 and the longest side is 20 cms longer than the shortest side. Compute the length
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!