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
natita [175]
3 years ago
12

A well of diameter 4m is dug 14m deep. The earth taken out is spread evenly all around the well to form a 40cm high embankment.

Find the width of the embankment
Mathematics
1 answer:
dimulka [17.4K]3 years ago
8 0

Answer:

82.72m

Step-by-step explanation:

Volume = πr2h

= 3.142*7*7*14

= 2,155.41m³

Now that we hav the volume of earth, we go on to find the raduis of the spread

2155.41m³ = 3.142*r²*0.4

2155.41m³ = 1.26r²

r² = 1,710.64

r = 41.36m

Width = diameter = 2r = 82.72m

You might be interested in
What is absolute value?
pochemuha

Answer:

Absolute value means the distance between a number and 0.

Examples:

The absolute value of -7 is 7.

The absolute value of 5 is 5.

Key Concepts:

The absolute value sign is |x|, where x is any real number.

The absolute value removes any negative sign in front of a number.

8 0
3 years ago
Read 2 more answers
Find the value of two numbers if their sum is 16 and their difference is 2.4
Verdich [7]

Lets x and y are the value of two numbers.

x + y = 16

x - y = 2.4

If x + y = 16 then x = 16 - y

Substitute x = 16 - y into x - y = 2.4

16 - y - y = 2.4

16 - 2y = 2.4

2y = 13.6

 y = 6.8

x = 16 - y

x = 16 - 6.8

x = 9.2

Answer:

The value of two numbers are 9.2 and 6.8

7 0
3 years ago
Please Help Me. Brainliest :3
Lina20 [59]

I beleive that x would equal 50

8 0
3 years ago
Logan collect pledges for the charity walkathon. He will receive total contributions of $60 plus $20 for every mile that he walk
Afina-wow [57]
So 60 + 20 is 80, and that is $80 a mile. 80 x 3 = 240, + 80 = 320. and then we could say 2/6 of 80 is about 28, right? so i suppose 4 2/6? sorry if it's wrong, just trying to help to the best of my ability
4 0
3 years ago
1 Ft = 12 in ? Need help
Alina [70]
Yes it does, multiply the length value by 12
7 0
3 years ago
Other questions:
  • Which equation shows the quadratic formula used correctly to solve 7x^2 = 9 + x for x?
    14·1 answer
  • Write thirty -eight and ninety-seven hundredths kilograms in standard form
    14·1 answer
  • 3x+5y-(2y-7x)<br><br> Which of the following is equivalent to the expression
    15·1 answer
  • Answer all for BRAINLIEST!!! And lots of points ASAP
    7·2 answers
  • Which could be the area of one lateral face of the triangular prism?
    6·2 answers
  • Y=x+2, y=-x+2, and y = x +2
    5·1 answer
  • ( image attached) plz help 50 point test ASAP(:
    12·2 answers
  • A triangle has sides with lengths of 6 inches, 13 inches, and 17 inches. Is it a right triangle?
    13·1 answer
  • I am confused. Can somebody explain this to me?
    12·1 answer
  • If one recipe makes a dozen (12) muffins. How many dozen would I have to make for all 700 people?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!