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
charle [14.2K]
2 years ago
10

Ellis is painting wooden fenceposts before putting them in his yard. They are each 5 feet tall and have a diameter of 1 foot. Th

ere are 10 fenceposts in all. How much paint will Ellis need to paint all the surfaces of the 10 fenceposts? Use 3.14 for π, and round your answer to the nearest hundredth. Provide an explanation and proof for your answer to receive full credit.
Mathematics
2 answers:
elixir [45]2 years ago
7 0


Step-by-step explanation:

height of fence post 5 ft

diameter of fence post = 1 ft radius = 0.5 ft

Total surface of the fence post = 2pir(r+h)

= 2* 3.14 *(5+0.5)

= 6.28 * 5.5

= 34.54 ft^2 / post

For 10

345.4 ft^2

How much paint /ft^2

maksim [4K]2 years ago
4 0

Answer:

Step-by-step explanation:

Comment

The first step is to find the surface area of 1 fence post.

The formula is

Area_ends = 2 pi r^2 for the ends.

Area_body = 2*pi*r * h

Givens

r = d/2          r is the radius ; d is the diameter

r = 1/2 foot

h = 10 feet

Solution

1 fence post

Area = ends + area body

Area =  2*3.14 * (1/2)^2 + 2 * pi * r * h

Area = 2*3.14* (1/2)^2 + 2 * 3.14 * 1/2 * 10

Area = 1.57 + 31.4

Area = 32,97 square feet.

10 fence posts

10*32.97 = 329.7 square feet

Answer

10 fence posts have 329.7 square feet in area.

           

You might be interested in
¿Cómo las razones de seno y cos<br>eno son semejantes?​
Sauron [17]
Las razones de los lados de un triángulo rectángulo se llaman razones trigonométricas.

Espero te ayude :)
6 0
2 years ago
Complete the system that models the heights of the ball and the receiver’s hands over time. h = -16t² 14t h = -16t² t
bogdanovich [222]

Answer: The height of the ball at time t is given as h = -16t² + 14t + 6 while the height of the receiver hand at time t is given as h = -16t² + 10t + 8

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

A quarterback throws a football toward a receiver from a height of 6 ft. The initial vertical velocity of the ball is 14 ft/s. At the same time that the ball is thrown, the receiver raises his hands to a height of 8 ft and jumps up with an initial vertical velocity of 10 ft/s.

The height of the ball at time t is given as h = -16t² + 14t + 6 while the height of the receiver hand at time t is given as h = -16t² + 10t + 8

4 0
2 years ago
Help The area of a square
DIA [1.3K]

Answer:

2551\dfrac{1}{2}

Step-by-step explanation:

\bf l = 20\dfrac{\sf 1}{4} \ in = \dfrac{81}{4} \ in

\bf w = 10\dfrac{1}{2} = \dfrac{21}{2} \ in\\\\\\h = 12 \ in

Volume of rectangular prism = l*w*h

                                                 = \dfrac{81}{4}*\dfrac{21}{2}*12\\\\\\= 81 *\dfrac{21}{2}*3\\\\\\= \dfrac{5103}{2}\\\\\\= 2551 \dfrac{1}{2} \ cubic \ inches

3 0
2 years ago
Read 2 more answers
What of the following mathematical statements fits the sentence: w decreased by 5?
finlep [7]
The answer is C, w - 5.
7 0
3 years ago
Plz help me with my homework
Temka [501]
Depends on what it is, i'd personally love to at any point
3 0
3 years ago
Other questions:
  • Dominique is a customer of Apexoria Credit Union. She has $22,978 in a checking account and $20,000 in savings. How much of Domi
    13·1 answer
  • Quadrilateral KLMN is a rectangle. The coordinates of L are L(1,-4) and the coordinates of M are M(3,-2) find the slopes of side
    9·2 answers
  • Drag each expression to show whether it is equivalent to 54x + 18, 18(3x – 1), or (6 • 9x) + (6 • 1).
    12·2 answers
  • 11. Solve for x 3x + 3 − x + (−7) &gt; 6 A. x &gt; 5 B. x &gt; (−5) C. x &lt; 5 D. x &gt; 2.5
    6·2 answers
  • Tom can wash 44 plates in 5 minutes how many seconds will it take to wash 11 plates
    8·2 answers
  • What is the answer to 7(2m + 6)+ 8m
    7·1 answer
  • Solve for answer (14x-5) (19x-13)
    8·1 answer
  • Reflect the point (8,-7) across the x-axis
    14·2 answers
  • A new Honda Civic costs $ 22 , 000 the year it is made. This car depreciates, losing value at a rate of 5 % each year on average
    7·1 answer
  • The sum of 6 times a number and 8 times another number is 12. The difference of those numbers is 9. What are the two numbers
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!