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Perimeter of an isoscels triangle is 100...

Perimeter of an isoscels triangle is `100 cm` . If its base increase at the rate of `2cm // min`, the, when base is 30cm , its altitude is changing at the rate of

A

`2.5 cm min`.

B

`-0.25 cm //min`.

C

`25 cm//min`.

D

`- sqrt2.5 cm //min`.

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Verified by Experts

The correct Answer is:
D
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