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
Svet_ta [14]
3 years ago
8

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

Mathematics
1 answer:
Whitepunk [10]3 years ago
8 0

Answer:

A=81\pi\ m^{2}

Step-by-step explanation:

Step 1

Find the radius of the circular cross section

we know that

The circumference is equal to

C=2\pi r

we have

C=18\pi\ m

substitute and solve for r

18\pi=2\pi r

simplify

18=2 r

r=9\ m

Step 2

Find the area of the circular cross section

The area of the circle is equal to

A=\pi r^{2}

we have

r=9\ m

substitute

A=\pi (9)^{2}

A=81\pi\ m^{2}

You might be interested in
Helppppppppppppppppppppppp​
Vikentia [17]

Step-by-step explanation:

area of trapezoid=(a+b)×h divided by 2

=(9+19)×4 divided by2

=28×4 divided by2

=112 divided by 2

=56m square

6 0
2 years ago
Write the equation of the horizontal line given m = 0 that passes through the point (3,-2).
Digiron [165]

Answer:

<em>y = -2</em>

Step-by-step explanation:

Since the line is horizontal, all points have the same y-coordinate, -2. The y-intercept is the point (0, -2), so b = -2. The line is horizontal, so the slope is m = 0 which is given.

Use the slope-intercept form of the equation of a line and plug in the information you have.

y = mx + b

y = 0x + (-2)

y = -2

4 0
3 years ago
PLEASE HELP ME.<br><br> Is the point (3,-2) on the graph of 3x – 2y = 12?
Zinaida [17]

Answer:

use photo math, take a picture of the equation, go down to the graph and see if there is a plot on (3,-2)

3 0
3 years ago
Can you please help me I plead you
Levart [38]

Answer:

Question 2

x is approximately 15.038 or 15 days

Question 3

$3.41

Question 4

31.1

Step-by-step explanation:

Question 2

5.2 km/1 day =78.2 km/x days

Multiply both sides by x

5.2x=78.2

divide by 5.2

x is approximately 15.038

or 15 days

Question 3

350-(262.94+83.65)

$3.41

Question 4

22(1.3)+2.5

31.1 m

5 0
3 years ago
Choose the correct simplification of (7x3y3)2.<br><br> 14x6y6<br> 49x5y5<br> 49x6y6<br> 14x5y5
dolphi86 [110]
The answer would be the first one.

I find it easier to expand the equation (you still get the same answer).

= 2 * 7x + 2 * 3y + 2 * 3
= 14x + 6y + 6

Hope this helps!
8 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone solve this for me?
    7·1 answer
  • PLEASE I NEED HELP!!!!
    10·1 answer
  • 14x+3y+250. Identify the variables, variable terms, constant terms, and coefficients, as well as what they represent in the cont
    12·1 answer
  • Acidity is measured on the pH scale. The acidity of a substance is given by pH=−logH, where H is the concentration of Hydrogen i
    15·1 answer
  • HELP ASAP Larry deposits $36,000 into each of two savings accounts.
    6·2 answers
  • When Legs jumps 2 times and takes 13 steps forward, he lands in the same place as when he jumps 4 times and takes 5 steps backwa
    5·1 answer
  • A color printer prints 21 pages in 6 minutes.<br> How many pages does it print per minute?
    5·1 answer
  • 2<br> Solve<br> 3 (3x +9) = –2(2x+6).<br> The solution is x =
    13·1 answer
  • Please help find the answer ​
    15·2 answers
  • HELP PLEASE ITS DUE TODAY
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!