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प्रश्न
A hemispherical bowl of internal diameter 30 cm is full of a liquid. This liquid is poured into cylindrical bottles of diameter 5 cm and height 6 cm each. How many bottles are required?
उत्तर
Radius of hemispherical ball`=30/2= 15 "cm"`
Volume of hemispherical bowl`=2/3pi"r"^3`
`=(2/3xx15xx15xx15)"cm"^3`
Radius of each`=5/2 "cm"`
Height of each bottle = 6 cm
`= "volume of each bottle =πr2h `
`=(pixx5/2xx5/2xx6)"cm"^3`
`=(2xxpixx15xx15xx2)/(3xxpixx5xx5xx6)`
=60
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