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A tailor wraps a measuring tape once around a round pillar and reads 132 cm. What is the radius of the pillar? (Take π = )

Class 8Surface Area of a CylinderMensuration
  • A66 cm
  • B42 cm
  • C21 cm
  • D10.5 cm

Step-by-Step Solution

Circumference 2π, so cm. 42 cm is the diameter; 66 cm is half the circumference.
Answer: C) 21 cm

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