The radius of a conical tent is 7 m and its height is 10 m. Then the slant height of the cone is ………… A) 11.2 m
The radius of a conical tent is 7 m and its height is 10 m. Then the slant height of the cone is …………
A) 11.2 m
B) 10.2 m
C) 12.2 m
D) 14.2 m
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Correct option is: C) 12.2 m
r = Radius of the conical tent = 7 m
and h = Height of the conical tent = 10m
\(\therefore\) Slant height of the cone is l = \(\sqrt {r^2 + h^2}\)
= \(\sqrt {7^2+10^2}\)
= \(\sqrt {49 + 100}\)
= \(\sqrt{149}\)
= 12.2 m
Hence, the slant height of the cone is 12.2 m
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