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A cone has slant height 13 cm and base radius 5 cm. What is its vertical height?

Class 9Surface Area of a ConeMensuration
  • A8 cm
  • B√194 cm
  • C12 cm
  • D18 cm

Step-by-Step Solution

= √ = √(169 − 25) = √144 = 12 cm. (√194 adds instead of subtracting.)
Answer: C) 12 cm

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