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 estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
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)
The cost of 5 similar digital cameras and 3 similar video cameras is 3213. Each video camera costs 4 times as much as each digital camera. John buys a digital camera and a video camera. How much does he
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity