Application of Derivatives 4 Question 12
13. If of wire is available for fencing off a flower-bed in the form of a circular sector, then the maximum area (in sq. m) of the flower-bed is
(2017 Main)
(a) 12.5
(b) 10
(c) 25
(d) 30
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Answer:
Correct Answer: 13. (d)
Solution:
- Total length
Now, area of flower-bed,
For maxima or minima, put