Question

1. The slant height of a cone with radius 15 cm and height 20 cm is
O a) 21cm
O b) 20cm
O c) 25cm
O d) 15cm

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Answer 1

Answer:

$slant \: height = \sqrt{ {r}^{2} + h }^{2} \\ raidus = 15 \\ height = 20 \\ \sqrt{15 {}^{2} + 20 {}^{2} } \\ \sqrt{225 + 400 } \\ \sqrt{625} \\ = 25$

Answer 2

Answer:

the slant hieght of a cone is 25 cm