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
erica [24]
3 years ago
15

A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18pi meters.

Mathematics
1 answer:
IgorLugansk [536]3 years ago
6 0

Answer:

  • 81π m²

Step-by-step explanation:

Circumference formula: C = 2πr

Compare with given value and determine the radius:

  • 2πr = 18π
  • r = 18π/2π
  • r = 9 m

Find the area of the cross-section.

Area formula: A = πr²

Area: A = 9²*π = 81π m²

You might be interested in
Jean and Clint stack boxes at a warehouse. Jean stacks 50 boxes per hour. Clint stacks 60 boxes per hour. Which of the following
Valentin [98]
Represent the total number of boxes that both jean and clint stack in h hours,

total number of boxes=(50xh)+(60xh)
you want the total number of boxes for both of them together. so the amount they can stack times h or the hours. so if h=5 you would do 50x5 plus+ 60x5 which would give you 250 and 300. add the two you get 550 boxes for 5 hours total.
5 0
3 years ago
Please help me find the area of this triangle! I’m not given the height,
Goryan [66]
The two legs are 90° apart, so constitute the "base" and "height".
.. A = (1/2)*b*h = (1/2)*(13 m)*(18.2 m) = 118.3 m^2
8 0
3 years ago
Which of the following are solutions to the equation below ? 2x^2+18=20
Sedaia [141]

Answer:

there is no A B C or D

4 0
3 years ago
Read 2 more answers
Can i please get help with this question?
poizon [28]

x . 6 = \frac{3}{8}


Pass 6 as division


x = \frac{\frac{3}{8}}{6}


As we know:


\frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a.d}{b.c}


So,


x = \frac{3}{8.6}

x = \frac{3}{48}

Simplify by 3

x = \frac{1}{16}

7 0
3 years ago
Read 2 more answers
Pls help ASAP!<br> will mark brainliest for correct answer
Anon25 [30]

Answer:

91

Step-by-step explanation:

Replace x and y with given values

3^3 + 4^3

the third power of three is equal to 27 and the thrid power of 4 is equal to 64

27 + 64 = 91

5 0
3 years ago
Other questions:
  • Identify the vertex of the graph of the given function.<br> 4. y = |x + 1| - 3
    14·2 answers
  • Evaluate [(40 + 5) − 32] ÷ 9 ⋅ 2<br><br> 9.3<br> 8.6<br> 8<br> 2
    8·2 answers
  • A rectangular piece of paper with length 30cm and width 12cm has two semicircles cut out of it. Find the area of the paper that
    15·1 answer
  • the maximum slope for a hand propelled wheelchair ramp should be a 1 inch rise to every 12 inches of blank. What is the maximum
    12·1 answer
  • Please help!!!!!!! !!!!!!!!! !!!!!!!!
    12·1 answer
  • What is the percent of N in<br> NH3?<br> (H = 1.008 amu, N = 14.01 amu)<br> [?]%
    13·1 answer
  • Hi pls help me in math im soo stuck:(((plss​
    11·1 answer
  • Kree works for a constant hourly wage of w dollars. Which choice shows the correct relationship between e, Kree's total earnings
    14·1 answer
  • Find the percentage change from<br> 40 to 60.
    6·1 answer
  • Hello I need help the picture is down below
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!