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Question: Answered & Verified by Expert
The side of an equilateral triangle is increasing at the rate of $2 \mathrm{~cm} / \mathrm{s}$, then the rate at which the area is increasing when the side of the triangle is $20 \mathrm{~cm}$ is
MathematicsApplication of DerivativesAP EAMCETAP EAMCET 2020 (07 Oct Special)
Options:
  • A $5 \sqrt{3} \mathrm{~cm}^2 / \mathrm{s}$
  • B $10 \sqrt{3} \mathrm{~cm}^2 / \mathrm{s}$
  • C $25 \sqrt{3} \mathrm{~cm}^2 / \mathrm{s}$
  • D $20 \sqrt{3} \mathrm{~cm}^2 / \mathrm{s}$
Solution:
1965 Upvotes Verified Answer
The correct answer is: $20 \sqrt{3} \mathrm{~cm}^2 / \mathrm{s}$
No solution. Refer to answer key.

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