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
A local coffee shop serves 2/9 as many customers as a shop run by a national coffee chain. The shop run by the chain serves 502
aleksklad [387]

Answer:

116

Step-by-step explanation:

502/9*2

About 57.8*2

115.6

Round up to 116

The local shop serves about 116 customers a day.

8 0
3 years ago
You buy rice at $0.71 a pound. One batch of fried rice requires 2 pounds of rice. How much does the rice for one batch cost? Rou
Flauer [41]

Answer:

$1.42

Step-by-step explanation:

$0.71*2=$1.42

herp derp

4 0
3 years ago
In the general equation of a line, if A = 0, what will the graph of the line look like?
attashe74 [19]
It would be a zero slope
4 0
3 years ago
Read 2 more answers
Help ill give brainlest pls
Dafna1 [17]

Answer:

The answer is D

Step-by-step explanation:

This is because the x value didn't change while the y values became negative.

3 0
2 years ago
Read 2 more answers
Unit Test
Virty [35]
I believe it’s b because of the way that it is
6 0
3 years ago
Other questions:
  • Find the area 3yd/10yd
    7·2 answers
  • 5 3/8 - 1 1/4 + 2 1/2 - 7/16=
    13·1 answer
  • You need about 1 ½ hours to set up a computer workstation. At this rate, how many hours should it take you to set up 7 of these
    13·2 answers
  • Write the expression 21a^3c^8/7a^5c^3
    5·1 answer
  • What is 98.43 as a fraction?
    12·1 answer
  • Which function is graphed on the coordinate plane below?
    11·1 answer
  • I need help figuring out this equation
    8·2 answers
  • (15) Find the value of x. *<br>​
    11·1 answer
  • NEED ASAP!!<br><br><br> Find the surface area of the pyramid.
    7·1 answer
  • Mean:<br><br> Median:<br><br> Mode:<br><br> Range:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!