Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 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
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 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
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
CBSE XII
>>
Math
>>
Model Papers
(i) A stone is dropped into a quite lake and waves move in circles at the speed of 5 cm/s. At the instant when the radius of circular wave is 8cm, how fast is the enclosed area increasing?
cbse
class12
modelpaper
2012
sec-c
q28
math
Share
asked
Jan 23, 2013
by
thanvigandhi_1
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
Related questions
A stone is dropped into a quiet lake and waves move in circles at the speed of $5 \;cm/s$. At the instant when the radius of the circular wave is $8 \;cm$, how fast is the enclosed area increasing?
cbse
class12
bookproblem
ch6
sec1
q5
p197
sec-a
easy
math
asked
Nov 22, 2012
by
thanvigandhi_1
1
answer
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?
cbse
class12
modelpaper
2012
sec-b
q16
math
asked
Feb 4, 2013
by
thanvigandhi_1
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.
cbse
class12
modelpaper
2012
sec-b
q17
math
asked
Jan 30, 2013
by
thanvigandhi_1
0
answers
The volume of a cube is increasing at the rate of \( 8cm^ 3/s\) . How fast is the volume of a cube is increasing at the rate of \(8cm^ 3 /s\) . How fast is the surface area increasing when the length of an edge is $12 cm$?
cbse
class12
bookproblem
ch6
sec1
q2
p197
sec-a
easy
math
asked
Nov 16, 2012
by
kasturi.c
1
answer
If a young man rides his motorcycle at 25 km/hour, he had to spend Rs.2 per km on petrol. If he rides at a faster speed of 40 km/hour, the petrol cost increases at Rs.5 per km. He has Rs.100 to spend on petrol and wishes to find what is the maximum distance he can travel within one hour. Express this as L.P.P. and solve it graphically.
cbse
class12
modelpaper
2012
sec-c
q28
math
asked
Jan 27, 2013
by
thanvigandhi_1
1
answer
Calculate the area of the region enclosed between the circles \( x^2+y^2=9 \: and \: (x-3)^2+y^2=9.\)
cbse
class12
modelpaper
2012
sec-c
q25
math
asked
Jan 21, 2013
by
thanvigandhi_1
0
answers
Using integration, find the area of region enclosed between the circles \( x^2+y^2=4 \: and \: (x-2)^2+y^2=4.\)
cbse
class12
modelpaper
2012
sec-c
q26
math
asked
Jan 3, 2013
by
thanvigandhi_1
0
answers
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...