Home › CBSE Class 12 › Mathematics › Application of Integrals › An elementary strip of height y and width dx has…
An elementary strip of height y and width dx has area dA equal to:
Ay over dx
By minus dx
Cy times dx
Dy plus dx
Answer & Solution
Correct answer: C. y times dx
1. A thin strip is nearly a rectangle.
2. Its area is height times width.
3. So dA equals y dx.
_Source: NCERT Class 12 Mathematics Part II, Chapter 8, Application of Integrals._
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