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Mathematics for IGCSE & O level - Mensuration (Section 9 - No. 24)
The volume of a cone is 75π cm³ and its radius is 5cm, what is the height?
6 cm
9 cm
3 cm
10 cm
Paliwanag
Volume = (1/3)πr²h. 75π = (1/3)π*5²*h. h=9cm
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