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A closed cylinder of radius 7 cm has a total surface area of 968 sq cm. Find its height. (Take π = )

Class 8Surface Area of a CylinderMensuration
  • A22 cm
  • B8 cm
  • C29 cm
  • D15 cm

Step-by-Step Solution

2πr(r + h) = 968 → 44(7 + h) = 968 → 7 + h = 22 → h = 15 cm. 22 cm is r + h, not h.
Answer: D) 15 cm

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