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A conical tent of height 8 m and base radius 6 m is made from canvas 3 m wide. What length of canvas is needed? (π = 3.14, ignore wastage)

Class 9Surface Area of a ConeMensuration
  • A50.24 m
  • B31.4 m
  • C188.4 m
  • D62.8 m

Step-by-Step Solution

= √ m. Canvas area = . Length = 188.4 ÷ 3 = 62.8 m. (188.4 is the area, not the length; 50.24 uses h.)
Answer: D) 62.8 m

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