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
vlabodo [156]
2 years ago
12

An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s

tart text, space, c, m, end text. What is the area AAA of the circular cross section of this pipe?
Mathematics
1 answer:
Alex_Xolod [135]2 years ago
8 0

Answer:

314.2 cm²

Step-by-step explanation:

The area of the circular cross section of the pipe is given by A = πd²/4 where d = diameter of pipe = 20 cm

So, A = πd²/4

substituting the value of d into the equation, we have

A = π(20 cm)²/4

A = π400 cm²/4

A = 100π cm²

A = 314.16 cm²

A ≅ 314.2 cm²

You might be interested in
I need help plz help me
denis-greek [22]

Answer: 2538

Step-by-step explanation:

12*21/2

126

126/1*41/2

2538

4 0
3 years ago
Read 2 more answers
Please help meeeeeeeeeee
mixas84 [53]

Answer:

x=72

y=54

Step-by-step explanation:

1st question. y=54 because it is a bisector of the 108 degree angles. (a polygon's interior angles add to number of sides minus 2 times 180)

There are two ys, so they add up to 108. A triangle's interior angles add to 180. 180-108 =72 x=72

2nd question, x is 72 ( it says x is the same measure) so 180-72=2y.

y still equals 54

4 0
3 years ago
Read 2 more answers
Which number is additive inverse of -4 1/4
Nadusha1986 [10]

Answer:

4 1/4

Step-by-step explanation:

the additive inverse is a number that when you add it with the number you already had, makes 0

-2 is the additive inverse of 2

so 4 1/4 is the inverse of -4 1/4

7 0
3 years ago
Clara's class is going on a trip to the local science museum. Twenty-five students, one teacher, and three parents are going on
yarga [219]

Answer:

$107.50

Step-by-step explanation:

$3.50 = 1 STUDENT

$5.00 = 1 ADULT

TWENTY FIVE STUDENTS = $3.50 × 25 = $87.50

FOUR ADULTS (ONE TEACHER AND THREE PARENTS) = $5.00 × 4 = $20.00

TOTAL COST = $87.50 + $20.00 = $107.50

4 0
3 years ago
Out of the 30 days in June, you run 13 days and swim 6 days. You lift weights 7 days and ride a bike 4 days. If you make a pie c
Masteriza [31]

Answer:

3

Step-by-step explanation:

We can convert the values to percentage values and since a circle is 360°, we can multipy the percentages with 360° to get the degrees. The total of day is all the the things added up:

=13+6+7+4=30

Percent swimming:

=(6/30)\cdot{360}=72

Answer is 72 degrees

8 0
3 years ago
Read 2 more answers
Other questions:
  • Help please!!!!!!!!!!!!!!!
    7·1 answer
  • Please help
    12·1 answer
  • Which systems of equations have exactly one solution?
    12·1 answer
  • In which
    9·1 answer
  • Solve y = f (x) for x.<br>f(x) = x+5​
    8·1 answer
  • -|-2-3(6)| evaluation
    6·2 answers
  • Round the decimal to the nearest hundreth. If decimal cannot be rounded, state this.<br><br> 194.59
    10·2 answers
  • how many 1/2 inch cubes does it take to fill a rectangular prism with a length of 1 inch, a width of 2 inches and a height of 3
    14·1 answer
  • A triangle was translated 4 units down.
    5·2 answers
  • Please help a girl out, im so confused
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!