UPSKILL MATH PLUS

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1. Find the circumference of the circles whose radii are given below.
 
(i) \(49 \ cm\)
 
Answer:
 
Circumference \(=\)  \(cm\)
 
(ii) \(91 \ mm\)
 
Answer:
  
Circumference \(=\)  \(mm\)
 
2. The diameter of a circular well is \(4.2 \ m\). What is its circumference?
 
Answer:
 
Circumference \(=\)  \(m\)