1.

The radius of the base and height of a cone are 5 cm and 12 cm then its slant height A) 17 cm B) 7 cm C) 13 cm D) 6 cm

Answer»

Correct option is (C) 13 cm

Slant height of cone is \(l=\sqrt{r^2+h^2}\)

\(=\sqrt{5^2+12^2}=\sqrt{25+144}\)

\(=\sqrt{169}\) = 13 cm

Correct option is  C) 13 cm



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