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# Find the Circumference of the Circles with the Following Radius (Take Pi = 22/7) 21 Cm - CBSE Class 7 - Mathematics

ConceptCircle Circumference of a Circle

#### Question

Find the circumference of the circles with the following radius (Take pi = 22/7)

21 cm

#### Solution

r = 21 cm

Circumference = 2πr = 2 xx 22/7 xx 21 = 132 cm

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#### APPEARS IN

NCERT Solution for Mathematics for Class 7 (2018 to Current)
Chapter 11: Perimeter and Area
Ex. 11.30 | Q: 1.3 | Page no. 223
Solution Find the Circumference of the Circles with the Following Radius (Take Pi = 22/7) 21 Cm Concept: Circle - Circumference of a Circle.
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