Advertisements
Advertisements
प्रश्न
A shopkeeper has one laddoo of radius 5 cm. With the same material, how many laddoos of radius 2.5 cm can be made?
उत्तर
Volume of laddoo having radius = 5 cm
i.e Volume `(V_1) = 4/3 πr^3`
`V_1 = 4/3 xx 22/7 xx (5)^3`
`V_1 = 11000/21 cm^3`
Also volume of laddoo having radius = 2.5 cm
i.e, `V_2 = 4/3 πr^3`
`V_2 = 4/3 xx 22/7 × (2.5)^3`
`V_2 = 1375/21 cm^3`
∴ No of laddoos = `V_1/V_2 = 11000/1375` = 8
APPEARS IN
संबंधित प्रश्न
Find the amount of water displaced by a solid spherical ball of diameter 28 cm.
`["Assume "pi=22/7]`
Find the volume of a sphere whose surface area is 154 cm2.
`["Assume "pi=22/7]`
Find the volume of a sphere whose radius is 3.5 cm.
A hemispherical bowl is made of steel 0.25 cm thick. The inside radius of the bowl is 5 cm. Find the volume of steel used in making the bowl.
A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls. If the diameters of two balls be `3/2`cm and 2 cm, find the diameter of the third ball.
A measuring jar of internal diameter 10 cm is partially filled with water. Four equal spherical balls of diameter 2 cm each are dropped in it and they sink down in water completely. What will be the change in the level of water in the jar?
The radius of the internal and external surfaces of a hollow spherical shell are 3 cm and 5 cm respectively. If it is melted and recast into a solid cylinder of heigh2`2/3`cm Find the diameter of the cylinder.
The largest sphere is carved out of a cube of side 10.5 cm. Find the volume of the sphere.
A sphere, a cylinder and a cone have the same diameter. The height of the cylinder and also the cone are equal to the diameter of the sphere. Find the ratio of their volumes.
A solid sphere and a solid hemisphere have an equal total surface area. Prove that the ratio of their volume is `3sqrt(3):4`
