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
Molodets [167]
3 years ago
8

A circular pool with a diameter of 18 ft will have a uniform 4 ft concrete walkway poured around it. If the concrete cost $4.25

a square foot, how much will it cost for the concrete?
A. $1,714.07
B. $1,247.08
C. $276.40
D. $1,174.70
Mathematics
2 answers:
zysi [14]3 years ago
4 0

A circular pool with a diameter of 18 ft will have a uniform 4 ft concrete walkway poured around it. If the concrete cost $4.25 a square foot, how much will it cost for the concrete?

This can be solve be solving the area of walkway

Area of walkway is equal to = (pi)( 9 ft +4) ^2– (pi)(9ft)^2

= 276.46 sq ft

Cost = 276.46 sq ft * ($4.25 a square foot) = $1174.70

svp [43]3 years ago
4 0

Answer:

$1,174.70

Step-by-step explanation:

Given : A circular pool with a diameter of 18 ft will have a uniform 4 ft concrete walkway poured around it.

To Find: If the concrete cost $4.25 a square foot, how much will it cost for the concrete?

Solution:

A circular pool has  diameter of 18 ft will have a uniform 4 ft concrete walkway   around it.

So radius = diameter /2 =18/2 =9 feet

Thus Area of circular pool = \pi r^{2} = \pi 9^{2}

Use π =3.14

  Thus Area of circular pool =  3.14*9^{2}

                                             =  3.14*81

                                             =  254 . 37 square feet

Since the Radius of the pool with concrete = 9 + 4= 13

So, Area of circular pool with concrete=   3.14*13^{2}

                                             =  3.14*169

                                             =  530.66 square feet

Now surface area of concrete = area of pool with concrete - area of pool

Surface area of concrete= 530.66 - 254.34 = 276.32 square feet

If the concrete cost $4.25 a square foot of surface area,

So the cost for the concrete of  276.32 square feet  =  276.32 * 4.25 = $ 1174.36

The option close to our answer is $1,174.70

Thus Option D is correct

You might be interested in
Ana owns an airline and pays the airport $35.00 for each ticket sold. the amount Ana pays is given by f(x)=35x where x is the nu
nirvana33 [79]

Answer:

Domain is all positive real numbers. Range is all real positive numbers.

Step-by-step explanation:

When dealing with real life, negative and imaginary numbers are not a possible answer.

8 0
3 years ago
Which type of equation would best model the data shown?
Aloiza [94]
I have to say <span>C. Exponential</span>
4 0
3 years ago
Pls, look at picture for the question.
Yuri [45]

Answer:

B<C

Step-by-step explanation:

-a is the opposite of a. Since a is a negative number, it will become positive and be bigger than b, which is negative.

c is a positive number, so the opposite will be negative and can not be bigger than c.

8 0
2 years ago
Someone help me pleaseeeee
Rus_ich [418]

Answer:

5. Plane P

6. Line segment DB

7. Line CE

11. Ray BE (with an arrow on top from left to right) and Ray EC (with an arrow on top from left to right)

5 0
3 years ago
X=3816371/(27×63) solve for x
skelet666 [1.2K]

Answer:

X = 14,700

Step-by-step explanation:

you can use a calculator to get the x.

X=3816371/(27×63)

8 0
3 years ago
Other questions:
  • Quiero saber sobre Álgebra
    12·1 answer
  • What is the reason for each step in the solution of the equation? 3+4x−3x=4 Drag and drop the reasons into the boxes to correctl
    10·2 answers
  • Convert 0.875 inch to a fraction in simplest form. Click to select the correct answer.
    5·1 answer
  • ava wants to buy three pairs of a certain style of jeans at two different stores jeans jam sells the jeans 25% off the $24.99 re
    9·1 answer
  • Match each solution to the equation it solves.
    6·1 answer
  • This table gives a few (2,y) pairs of a line in the coordinate plane.
    13·1 answer
  • Enter the coordinates of the vertex of the graph of y=2(x+5)^2
    13·2 answers
  • Tell whether 24 is a factor or a multiple of the number 6?
    8·1 answer
  • Explain why the denominator does not change when you are counting by the
    15·1 answer
  • Help me with this problem plzzz
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!