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Circumference of a circle disc is 88 cm. Its radius is ______.

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Question

Circumference of a circle disc is 88 cm. Its radius is ______.

Options

  • 8 cm

  • 11 cm

  • 14 cm

  • 44 cm

MCQ
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Solution

Circumference of a circle disc is 88 cm. Its radius is 14 cm.

Explanation:

We know that, circumference = 2πr

⇒ `88 = 2 xx 22/7 xx r` 

⇒ `r = (88 xx 7)/(2 xx 22)` ...[∵ Circumference = 88 cm, given]

⇒ r = 14 cm

Hence, the radius is 14 cm.

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Chapter 9: Perimeter and Area - Exercise [Page 272]

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NCERT Exemplar Mathematics Exemplar Class 7
Chapter 9 Perimeter and Area
Exercise | Q 20. | Page 272

Video TutorialsVIEW ALL [1]

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