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Goa Board Class 10 (GBSHSE) Mathematics — practice by topic

Browse 30 questions across 3 Mathematics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Mathematics topics

Areas Related to Circles (30)Class 10 Maths (30)Mathematics (30)

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The distance all the way round a circle is called its:Read the answer and worked solution →The ratio of a circle's circumference to its diameter is denoted by the letter:Read the answer and worked solution →The circumference of a circle equals pi multiplied by the:Read the answer and worked solution →Written in terms of radius r, the circumference of a circle equals:Read the answer and worked solution →

Worked practice questions

The distance all the way round a circle is called its:

  1. Circumference
  2. Circumstance
  3. Circumvention
  4. Circumscription
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Correct answer: A. Circumference

1. A circle has no straight sides to add. 2. The distance round it gets a special name. 3. That name is the circumference. _Source: syllabus Mathematics Class X, Chapter 12, Areas Related to Circles._

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The ratio of a circle's circumference to its diameter is denoted by the letter:

  1. Rho
  2. Pi
  3. Phi
  4. Psi
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Correct answer: B. Pi

1. This ratio is the same for every circle. 2. A Greek letter is used for it. 3. That letter is pi. _Source: syllabus Mathematics Class X, Chapter 12, Areas Related to Circles._

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The circumference of a circle equals pi multiplied by the:

  1. Diameter
  2. Perimeter
  3. Parameter
  4. Millimetre
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Correct answer: A. Diameter

1. Pi is defined as circumference over diameter. 2. Rearranging gives circumference as pi times diameter. 3. So it is the diameter. _Source: syllabus Mathematics Class X, Chapter 12, Areas Related to Circles._

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