Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
sign-in
Download our FREE mobile app with 1000+ tests for CBSE, JEE MAIN, NEET
X
Search
Topics
Want to ask us a question?
Click here
Browse Questions
Student Questions
Ad
Home
>>
CBSE XII
>>
Math
>>
Model Papers
0
votes
The radius of a circle is increasing uniformly at the rate of 3 cm per second. Find the rate in which the area of the circle is increasing when the radius is 10 cm.
cbse
class12
modelpaper
2012
sec-a
q6
math
Share
asked
Jan 2, 2013
by
thanvigandhi_1
Please
log in
or
register
to add a comment.
Can you answer this question?
Do not ask me again to answer questions
Please
log in
or
register
to answer this question.
Related questions
0
votes
0
answers
A balloon which always remains spherical has a variable radius. Find the rate at which its volume is increasing with the radius when the radius is 10 cm.
asked
Jan 2, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-a
q6
math
0
votes
0
answers
The radius of a circle is increasing at 0.7 cm/s. What is the rate of increase of its circumference?
asked
Jan 10, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-q
q6
math
sec-a
0
votes
1
answer
The radius of a circle is increasing uniformly at the rate of $3\; cm/s.$ Find the rate at which the area of the circle is increasing when the radius is $10\; cm$.
asked
Nov 22, 2012
by
thanvigandhi_1
cbse
class12
bookproblem
ch6
sec1
q3
p197
sec-a
easy
math
0
votes
0
answers
The surface area of a spherical bubble of water increasing at the rate of \( 2 \: cm^2/sec.\) Find the rate at which the volume of the water bubble is increasing at that instant when its radius is 6 cm.
asked
Jan 30, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-b
q17
math
0
votes
0
answers
The rate of change of the area of a circle with respect to its radius r when r = 6 is \[ \begin{array} ((A) \: 10 π \quad & (B) \: 12 π \\ (C) \: 8 π \quad & (D)\: 11 π \end{array} \]
asked
Dec 24, 2012
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-a
q8
math
0
votes
1
answer
The radius of a circle is increasing at the rate of $0.7\; cm/s$. What is the rate of increase of its circumference?
asked
Nov 22, 2012
by
thanvigandhi_1
cbse
class12
bookproblem
ch6
sec1
q6
p198
sec-a
easy
math
0
votes
0
answers
Sand is pouring from a pipe at the rate of \( 12 cm^3/s.\) The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing when the height is 4 cm?
asked
Feb 4, 2013
by
thanvigandhi_1
cbse
class12
modelpaper
2012
sec-b
q16
math
Ask Question
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...