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The radius of a circle is increasing at the rate of 0.7 cm/s. What is the rate of increase of its circumference ?

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PRADEEP PUBLICATION-APPLICATIONS OF DERIVATIVES-EXERCISE
  1. An edge of a variable cube is increasing at the rate of 3 cm/s. How fa...

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  2. A stone is dropped into a quiet lake and waves move in circles at a sp...

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  3. The radius of a circle is increasing at the rate of 0.7 cm/s. What is ...

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  4. The length 'x' of a rectangle is decreasing at the rate of 5 cm per mi...

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  5. The length x of a rectangle is decreasign at the rate of 5 cm/min and ...

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  6. A balloon which always remains spherical is being inflated by .pumping...

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  7. A balloon, which always remains spherical has a variable radius. Find ...

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  8. A ladder 5 m long is leaning against a wall. The bottom of the ladder ...

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  9. A particle moves along the curve 6y = x^3+2. Find the points on the cu...

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  10. The radius of an air bubble is increasing at the rate of 1/2 cm/s. At...

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  11. A balloon, which always remains spherical, has a variable diameter 3/2...

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  12. Sand is pouring from a pipe at the rate of 12 cubic cm./sec. The falli...

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  13. The total cost C(x) in Rupees associated with the production of x unit...

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  14. The total revenue in Rupees received from the sale of x units of a pro...

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  15. Find the rate of change of the area of a circle with respect to its ra...

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  16. The total revenue in Rupees received from its sale of x units of a pro...

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  17. Show that the function given by f(x) = 3x + 17 is increasing on R.

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  18. Show that the function given by f(x) = e^2x is increasing on R.

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  19. f(x) = sin x is a strictly increasing in (0, pi/2)

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  20. f(x) = sin x is a strictly decreasing in (pi/2,pi)

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