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
Gennadij [26K]
2 years ago
14

3

Mathematics
1 answer:
Dafna11 [192]2 years ago
5 0

The approximate length of rail that needs to be replaced is 7.1 ft

<h3>Length of arc</h3>

Since the pool is circular, the approximate length that needs to be replaced is an arc of length, L = Ф/360° × πD where

  • Ф = central angle of rail section = 27° and
  • D = diameter of circular pool = 30 ft

<h3>Approximate length of rail</h3>

So, substituting the values of the variables into the equation, we have

L = Ф/360° × πD

L = 27°/360° × π × 30 ft

L = 3/40 × π × 30 ft

L = 3/4 × π × 3 ft

L = 9/4 × π  ft

L = 2.25 × π  ft

L = 7.07 ft

L ≅ 7.1 ft

So, the approximate length of rail that needs to be replaced is 7.1 ft

Learn more about length of an arc here:

brainly.com/question/8402454

You might be interested in
Subtract 6,139 from 13,486 and express the difference as a Roman Numberal​
ASHA 777 [7]

Answer: VIICCCXLVII

Don’t forget to mark me brainliest :)

5 0
2 years ago
Debra has ridden 57 miles of a bike course the course is 60 miles long what percentage of the course has Debra ridden so far
Reptile [31]

Hello!

To find our answer, we just divide.

57/60=0.95

We multiply by 100 to find our percent

100(0.95)-95

Therefore, our answer is 95%

I hope this helps!

4 0
3 years ago
Read 2 more answers
Numerical expression 5+9
ycow [4]
5+9=14 in numerical expression
4 0
3 years ago
E is the midpoint of DF, DE = 2x + 4, and EF = 3x + 1. Find DE, EF, and DF.
Agata [3.3K]
When there is a midpoint in a line segment, the two segments that are then produced have to be equal. So that means that because E is a midpoint of DF, DE=EF.
Set up the equation.
DE=EF
2x+4=3x+1
Then solve for x.
x=3
Then plug it back in the equation to find DE and EF.
DE=2x+4=2(3)+4=10
Because DE=EF then EF is also 10.
DF is made from the addition of DE and EF so DF is twice EF.
DF= 20

DE= 10, EF= 10, DF= 20

Hope this helps.
8 0
2 years ago
13.3x + 8.1 = 74.6<br><br> A. 6.2<br> B. 6 <br> C. 5<br> D. 0.5
navik [9.2K]

13.3x + 8.1 = 74.6


C. 5

7 0
3 years ago
Read 2 more answers
Other questions:
  • In a particular city, 82% of the residents have a desktop computer, 47% have a desktop computer and a laptop computer, and 3% ha
    12·1 answer
  • Write the equation in slope intercept form. what are the slope and y intercept -2x-11y=5.
    9·1 answer
  • Why did the scientist make an exact duplicate of himself
    11·1 answer
  • Please help me! I’m desperate
    9·1 answer
  • Help me I want good grades i
    10·1 answer
  • Please help me with this.
    10·1 answer
  • Conor's house is 3000 m from Oscar's house.
    11·1 answer
  • When checking you answer to an addition or subraction problem, use the _______ operation? OPPOSITE
    8·1 answer
  • Help ill give brainlest pls
    7·2 answers
  • How do you do this? ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!