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The front wheel of Sunita's tricycle has a radius of 21 cm. Taking π = 22/7, how many cm does the tricycle move forward when the wheel makes 10 full turns?

Competition practiceMensuration
  • A1320
  • B660
  • C132
  • D13860

Step-by-Step Solution

One turn covers the circumference cm, so 10 turns cover 1320 cm.
Answer: A) 1320

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