Circumference of a circle of diameter 5 cm is ______. - Mathematics

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MCQ
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Circumference of a circle of diameter 5 cm is ______.

Options

  • 3.14 cm

  • 31.4 cm

  • 15.7 cm

  • 1.57 cm

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Solution

Circumference of a circle of diameter 5 cm is 15.7 cm.

Explanation:

Given, diameter of a circle = 5 cm

∴ Radius = `5/2` cm  ......`[∵ "Radius" = "Diameter"/2]`

Now, circumference = 2πr

= `2 xx 22/7 xx 5/2`

= `110/7`

= 15.7 cm

  Is there an error in this question or solution?
Chapter 9: Perimeter and Area - Exercise [Page 272]

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NCERT Exemplar Mathematics Class 7
Chapter 9 Perimeter and Area
Exercise | Q 19. | Page 272

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