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
The length x of a rectangle is decreasing at the rate of 5 cm/minute and the width y is increasing at the rate of 4 cm/minute. When \( x = 8 cm \) and \( y = 6 cm \) , find the rate of a change of (a) the perimeter, (b) the area of the rectangle.
cbse
class12
modelpaper
2009
sec-b
q11
math
Share
asked
Dec 21, 2012
by
thanvigandhi_1
edited
Dec 29, 2012
by
thanvigandhi_1
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
Related questions
The length x of a rectangle is decreasing at the rate of 5 cm/minute and the width y is increasing at the rate of 4 cm/minute. When x = 8 cm and y = 6 cm, find the rate of change of (a) the perimeter, (b) the area of the rectangle.
cbse
class12
modelpaper
2012
sec-b
q15
difficult
ch6
math
asked
Jan 4, 2013
by
thanvigandhi_1
1
answer
The length \(x\) of a rectangle is decreasing at the rate of 5 cm/minute and the width y is increasing at the rate of 4 cm/minute. When \(x = 8\)cm and \(y = 6\)cm, find the rates of change of (b) the area of the triangle.
cbse
class12
bookproblem
ch6
sec1
q7
q7-b
p198
sec-a
easy
math
asked
Jul 5, 2013
by
sreemathi.v
1
answer
The length \(x\) of a rectangle is decreasing at the rate of $5\; cm/minute$ and the width y is increasing at the rate of $4\; cm/minute$. When \(x = 8\)cm and \(y = 6\)cm, find the rates of change of (a) the perimeter
cbse
class12
bookproblem
ch6
sec1
q7
q7-a
p198
sec-a
easy
math
asked
Nov 22, 2012
by
thanvigandhi_1
1
answer
Find the intervals in which the function f given by $ f(x) = \sin x + \cos x, 0 \leq \: x \leq \: 2\pi, $is strictly increasing or strictly decreasing.
cbse
class12
modelpaper
2009
sec-b
q11
math
asked
Dec 29, 2012
by
thanvigandhi_1
0
answers
Find the area of a parallelogram whose diagonals are determined by the vectors $\overrightarrow{a}=3i+j-2k$ and $\overrightarrow{b}=i-3j+4k$
isc
class12
modelpaper
2009
sec-b
q11
q11-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
The radius of a cylinder is increasing at the rate of $2$ cm/sec and its altitude is decreasing at the rate of $3$cm/sec . The rate of change of volume when the radius is $3$cm and the altitude is $5$cm is
tnstate
class12
bookproblem
p230
objective
q17
modelpaper
jun-2007
asked
May 15, 2013
by
poojasapani_1
1
answer
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
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
...
close