A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.What is the area A of the cross section of the column?
Give your answer in terms of pi.
Answers
Answer:
Step-by-step explanation:
Step 1
Find the radius of the circular cross section
we know that
The circumference is equal to
we have
substitute and solve for r
simplify
Step 2
Find the area of the circular cross section
The area of the circle is equal to
we have
substitute
Related Questions
(12y2+17y-4)+9y2-13y+3)
What is the surface area of a rectangular prism with a length of 3 mm, a width of 5 mm, and a height of 8 mm?mm2
Twice a number increased by 5?? in algebraic expression
Three consecutive intergers have a sum of 234. What are the three intergers
Answers
For this case we have the following expression.
We must find a term of expression that is repeated in all terms.
We then have the number 5.
By doing common factor 5 in all the expression we have:
Answer:
The factored expression is given by:
hope that helps
............................
math tests?
Answers
Final answer:
To calculate Juan's average math test score, add all the scores together (85, 83, and 93) and then divide by the total number of tests, which is 3. The average score is 87.
Explanation:
The question given is a mathematics problem related to calculating an average. In particular, it is about finding the average test score of Juan's math tests. To find the average of a set of numbers, you add up all the numbers and then divide by the quantity of numbers. In this case, we add the test scores 85, 83, and 93 which gives us a total of 261. Since there are 3 tests, we divide this total by 3. So, Juan's average test score is 261 divided by 3, which equals 87.
Learn more about average here:
#SPJ12
Answer:
80.5
Step-by-step explanation:
to find average you need to first added all your number then divide by how much numbers you added
Answers
opposite side to angle 60º=b
hypotenuse=a
cos 60º= adjacent side / hypotenuse
cos 60º=(2/3) / a
a=(2/3) / cos 60º=(2/3) / (1/2)=4/3
tan 60º= opposite side / adjacent side
tan 60º=b / (2/3)
b=(2/3)*tan 60º=(2/3)* √3=2√3 /3
Answer:
a=4/3
b=2√3 /3
Option 3: $12 down with equal payments of $5 for 12 months
Option 4: $20 down with equal payments of $20 for 12 months
(A.) Option 3
B. Option 1
C. Option 2
D. Option 4
Answers
Answer:
Option 3
Explanation:
To get the value of the cheapest bike, best option, we will calculate the total cost of each bike:
i- Option 1:
Total cost = $88
ii- Option 2:
$5 down payment and $8 per week for 10 weeks
Total cost = 5 + 8(10) = 5 + 80 = $85
iii- Option 3:
$12 down payment and $5 per month for 12 months
Total cost = 12 + 5(12) = 12 + 60 = $72
iv- Option 4:
$20 down payment and $20 per month for 12 months
Total cost = 20 + 20(12) = 20 + 240 = $260
Now, from the above calculations, we can conclude that:
The best price would be that of option 3 ($72). It is the lowest price compared to other option.
Hope this helps :)
Answer:
The answer is option 3
Step-by-step explanation:
Answers
You can't. There are an infinite number of different parallelograms,
with different dimensions, that all have area of 96 square miles.
Knowing the area doesn't tell you the dimensions.
Here are a few parallelograms with areas of 96 square miles:
-- square, every side 4√6 miles long
-- rectangle, 12 miles long, 8 miles wide
-- parallelogram, base=32 miles, height=3 miles
There are an infinite number of others.
Answers
g(x) = x^2 - 4x + 5 = (x - 2)^2 + 1 : axis of symmetry is x = 2
h(x) = -2x^2 + 4x + 1 = -2(x - 1)^2 + 3 : axis of symmetry is x = 1
Therefore, based on their axis of symmetry, f(x) < h(x) < g(x)