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
sergey [27]
3 years ago
8

If f(r)= 3.14 r^2 what is f(3)

Mathematics
1 answer:
KIM [24]3 years ago
6 0

Answer:

f(3) = 28.26

Step-by-step explanation:

Substitute r = 3 into f(r) , that is

f(3) = 3.14 × 3² = 3.14 × 9 = 28.26

You might be interested in
A book sold 39,300 copies in its first month of release. Suppose this represents 6.3% of the number of copies sold to date. How
konstantin123 [22]
Hi there! So 39,300 copies of a book were sold on debut month of release, and that represents 6.3% of all copies sold to date. To find the total amount of copies sold, we can write and solve a proportion. Set it up like this:

39,300/x = 6.3/100

We set it up like this because 39,300 is part of the total amount, and it represents 6.3% of the total book sales. Percents are parts of 100, which is why 6.3 is above 100. Let's cross multiply the values. 39,300 * 100 is 3,930,000. 6.3 * x is 6.3x. that makes 3,930,000 = 6.3x. Divide each side by 6.3 to isolate the x. 6.3x/6.3 cancels out. 3,930,000/6.3 is 623,809.5238 or 623,810 when rounded to the nearest whole number. There. The total amount of copies sold to date is about 623,810.
8 0
3 years ago
Solve the following equation using the quadratic formula.
nataly862011 [7]

Answer:

x=3.5,x=-6

I hope this help

7 0
3 years ago
There are 5 people already in the pool. Jason and his 2 friends get in How many people are in the pool n w?
Zigmanuir [339]
The answer would be 8! This is because there were already five and then Jason got in, so six, and then two friends got in as well, so six plus two is eight!
7 0
3 years ago
Read 2 more answers
The diameter of the base of the cone measures 8 units. The height measures 6 units. What is the volume of the cone?
Maslowich
V = \pir^2h/3

V = 3.14 x 4^2 x 6/3       (remember r is 1/2 of the diameter)
V = 3.14 x 16 x 2
V = 100.5
3 0
3 years ago
Read 2 more answers
What is 5,782 rounded to the nearest thousand​
olasank [31]

Answer:

6,000

Step-by-step explanation:

because it is a less amount of numbers to get to 6,000 than to get to 5,00

4 0
3 years ago
Read 2 more answers
Other questions:
  • Please help, i need to pass ​
    9·1 answer
  • - 3/5 or - 0.6 which is greater
    9·2 answers
  • Andrea has 3 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the
    11·1 answer
  • 311over500 as a decimal
    5·1 answer
  • Please help and answer
    5·1 answer
  • Which of the following is NOT a type of bisector?
    7·1 answer
  • What is 3/4 plus 1/3 equals?
    5·1 answer
  • Rebecca has 6 yards of ribbon. It takes 3/8 yard to wrap one package. How may packages can Rebecca wrap? I need help this is due
    5·1 answer
  • Please help me!!!!!!!!111
    13·1 answer
  • A^2-8b^2+2c^2+2ab+3ac<br><br>Please factor
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!