If the rate of change of radius of a circle is 6 cm/s t - Practice (English) | ObjectiveMcq

Loading practice questions

A focused practice platform for competitive-exam MCQs, subject wise, topic wise practice, and current affairs revision.

Exams

SSC CGL
UPSC CSE PRELIMS
IBPS PO
RRB NTPC
CDS

Subjects

Mathematics
Physics
General Knowledge
English
Reasoning

Resources

Current Affairs
Search MCQs
Practice Sets

Company

About Us
Contact
Privacy Policy
Terms of Use
Disclaimer
Copyright

Practice library for exams, subjects, and daily revision. For learning purposes only.

© 2026 ObjectiveMcq.ComAll rights reserved

If the rate of change of radius of a circle is 6 cm/s t - Practice (English) | ObjectiveMcq

PracticeMathematicsBasicsIf the rate of change of radius of ...

Basics MathematicsHard

532 views

If the rate of change of radius of a circle is 6 cm/s then find the rate of change of area of the circle when r=2 cm.

Correct Answer: C — 75.36 cm2/s

Explanation:

No explanation is available for this question yet.

Related Practice

Let M={7,8,9}. Determine which of the following functions is invertible for f:M→M.
If f:N→N, g:N→N and h:N→R is defined as f(x) = 3x-5, g(y) = 6y² and h(z) = tan z, find ho(gof).
The function f:R→R defined by f(x)=5x+9 is invertible.
A function is invertible if it is ____________
If f:R→R is given by f(x) = (5+x⁴)^(1/4), then fοf(x) is _______
If f:R→R, g(x)=3x2+7 and f(x)=√x, then gοf(x) is equal to _______
The composition of functions is both commutative and associative.
Which of the following is not a valid elementary operation?