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
bogdanovich [222]
2 years ago
9

One gallon of paint covers 400 square feet of surface area. A typical spherical water tower holds 66,840.28 cubic feet of water.

If a city has 25 gallons of paint available, will there be enough to paint the outside of a typical spherical water tower?
Mathematics
1 answer:
fredd [130]2 years ago
3 0

Answer:

They would need approximately 20 gallons of paint for the water tower, so yes, 25 gallons would be enough.

Step-by-step explanation:

In order to find out if there is enough paint for the surface area of the sphere, you need to first find the radius of the object so you can determine the measure of the entire surface area.  Since they give us the volume, we can use that to solve for the radius using the volume formula:  V = πr³  or 66840.28 = πr³.  Using inverse operations, you can first multiply both sides of the equation by the reciprocal of 4/3 or 3/4, then divide by π, this gives you 15,965 = r³.  In order to find 'r', take the cube root of both sides:  ∛15965 = ∛r³  or r ≈ 25.

Now that you know radius = 25, you can use the formula for surface area:  SA = 4πr²  or 4π(25)² ≈ 7850 ft².  Since one gallon of paint covers 400 square feet, we can take our total and divide by 400 to find the number of gallons:  7850 ÷ 400 ≈ 19.6.  In total, we would need 19.6 gallons of paint for the water tower, so if there are 25 gallons available, there is enough.


You might be interested in
A line with a slope of o passes through the points (9, z) and (-7, 5). What is the value of z?
pogonyaev

Answer:

z = 5

Step-by-step explanation:

m = ∆y/∆x = y₂-y₁/x₂-x₁

0 = y₂-y₁/x₂-x₁ = 5 - z / -7 - 9 = 5 - z / -16 →

5 - z / -16 = 0 → 5 - z / -16 × -16 = 0 × -16 → 5 - z = 0 →

5 - z - 5 = 0 - 5 → -z = -5 → z = 5

5 0
3 years ago
The school cafeteria offers three choices for the main course (peanut
Elena-2011 [213]

Answer: 18 different combinations

Step-by-step explanation: When finding out combinations, you just multiply all the numbers. In this case, it would be 3x2x3 which equals 18. Please mark brainliest <3

6 0
2 years ago
Open the picture and answer it pls
Nastasia [14]

Answer:

3.5

Step-by-step explanation:

11.5 - 2.5 = 9

9 - 5.5 = 3.5

and scalene triange means none of the 3 sides are equal...

3.5 does not equal 5.5 or 2.5

3 0
2 years ago
Read 2 more answers
To join the meeting vyv-vmvx-qnp​
zmey [24]

Answer: yk i just a flight away if u wanna u can take a private plane

Step-by-step explanation:

Telepathia

3 0
3 years ago
Is 1/3 greater than 1/2???????????
CaHeK987 [17]

Answer:

no

Step-by-step explanation:

half is bigger then 1/3 think of it like this split a pizza into 2 pieces and the other into 3 take one out of both which is bigger if that helps

8 0
3 years ago
Other questions:
  • The square of x increased by the cube of y
    6·1 answer
  • Help!! is it $486?
    9·2 answers
  • Then find the area bounded by the two graphs of y=2x^2−24x+42 and y=7x−2x^2
    5·1 answer
  • Solve for q.<br> 9 + 3q = 4q
    11·2 answers
  • We need helping solving for y.....3x-9y=24
    7·2 answers
  • Algebra 2
    5·1 answer
  • What's the slope of the equations y = 2/3x + 5?
    13·1 answer
  • Which statements describe one of the transformations performed on f(x) =x^2 to create g(x)=2x^2+5?
    14·1 answer
  • Which quadrilateral and why?
    6·1 answer
  • Translate the sentence into an equation. Three less than the product of 6 and a number equals 4. Use the variable b for the unkn
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!