TANCET 2008 - Previous year paper: Circles - Geometry: Ascent Education TANCET MBA Classes

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You are here: Home  »  TANCET Prep Questions »  Mensuration - Solid Geometry »   TANCET 2008 Question 5

TANCET 2008 Quant Question 5 : Circles - Mensuration

Question

If x units are added to the length of the radius of a circle, what is the number of units by which the circumference of the circle is increased?
  1. x
  2. 2
  3. 2 pi
  4. 2 pi x
  5. x2
Correct Answer: 2 pi x. Choice (4)

Explanatory Answers

Let the radius of the circle be 'r' units.
The circumference of the circle will therefore be 2 pi r units.

If the radius is increased by 'x' units, the new radius will be (r + x) units.

The new circumference will be
Or the circumference increases by units.

Correct Answer (4)

Level of difficulty : Very Easy

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