menu
Qammunity
Login
Register
My account
Edit my Profile
Private messages
My favorites
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(5)? A. 28.14 B. 31.40 C. 246.49 D. 78.50
asked
Jan 3, 2017
23.1k
views
3
votes
The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(5)?
A. 28.14
B. 31.40
C. 246.49
D. 78.50
Mathematics
high-school
Roman Dolgiy
asked
by
Roman Dolgiy
8.4k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
4
votes
It is 31.4 because you plug in the function of 5 into r
Freerobots
answered
Jan 9, 2017
by
Freerobots
8.9k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Apr 2, 2017
197k
views
The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(5)? A. 28.14 B. 31.40 C. 246.49 D. 78.50
Ilya Sazonov
asked
Apr 2, 2017
by
Ilya Sazonov
7.1k
points
Mathematics
high-school
2
answers
0
votes
197k
views
asked
Mar 23, 2018
233k
views
A(r) is a function that gives the area of a circle with radius r. It can be written in equation form as A(r) = 3.14r2. What is the value of A(5)? A:31.40 B:78.50 C:28.14 D:246.49
Asgallant
asked
Mar 23, 2018
by
Asgallant
8.2k
points
Mathematics
high-school
1
answer
1
vote
233k
views
asked
Jun 9, 2017
186k
views
The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(4)? A. 50.24 B. 25.12 C. 19.14 D. 157.75
Lintu
asked
Jun 9, 2017
by
Lintu
8.0k
points
Mathematics
high-school
2
answers
3
votes
186k
views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.4m
questions
12.2m
answers
Other Questions
How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity