Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • need solution for rd sharma maths class 12 chapter 12 derivatives as a rate measure exercise fill in the blanks question 11

need solution for rd sharma maths class 12 chapter 12 derivatives as a rate measure exercise fill in the blanks question 11

Answers (1)

best_answer

Answer: \frac{dC}{dt}\pi \; cm/sec

Hint: Here we use the circumference of circle,C=2\pi r

Given: The radius of a circle is increasing at the rate of 0.5 cm/sec

Solution: C=2\pi r

              \frac{dC}{dt}=2\pi \frac{dr}{dt}

                   = 2\pi \times 0.5                                \left [ \because \frac{dr}{dt}=0.5 \right ]

              \frac{dC}{dt}=\pi \; cm/sec

Posted by

infoexpert26

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
anam-khan

CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
anam-khan

CBSE Class 12 accountancy board exam analysis 2024 out; paper rated easy, balanced

Latest Question