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प्रश्न
The height of a right circular cone whose radius is 5 cm and slant height is 13 cm will be
विकल्प
12 cm
10 cm
13 cm
5 cm
उत्तर
12 cm
Explanation;
Hint:
Here r = 5 cm and l = 13 cm
h = `sqrt("l"^2 - "r"^2)`
= `sqrt(13^2 - 5^2)`
= `sqrt(169 - 25)`
h = `sqrt(144)`
= 12 cm
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