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A funnel is in the shape of a right circular cone with a base radius of 3 cm and a height of 4 cm. Find the slant height of the funnel.(a) 4 cm(b) 5 cm(c) 7 cm(d) 7.5 cmThe question was asked during an interview for a job.Query is from Surface Area and Volume of Different Solid Shapes in chapter Surface Area and Volumes of Mathematics – Class 10

Answer»

The correct CHOICE is (B) 5 cm

The explanation is: SLANT HEIGHT = \(\sqrt {h^2+r^2}\)

= \(\sqrt {4^2+3^2}\)

= \(\sqrt {16+9}\)

= √25

= 5 cm



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