MEDIUM
9th CBSE
IMPORTANT
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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.

Important Questions on Surface Area and Volume of a Sphere

HARD
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 5
How many bullets can be made out of a cube of lead, whose edge measures 22 cm, each bullet being 2 cm in diameter?
HARD
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 6
A shopkeeper has one laddoo of radius 5 cm. With the same material, how many laddoos of radius 2.5 cm can be made?
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 7
A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls. If the diameters of two balls be 32 cm and 2 cm, if the diameter of the third ball is k.50 cm, then find the value of k.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 8
A sphere of radius 5 cm is immersed in water filled in a cylinder, the level of water rises 53 cm. If the radius of the cylinder is k cm, then find the value of k.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 9
If the radius of a sphere is doubled, then the ratio of the volume of the first sphere to that of the second sphere will be 1:k. Find the value of k.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 10
A vessel in the form of a hemispherical bowl is full of water. Its contents are emptied in a right circular cylinder. The internal radii of the bowl and the cylinder are 3.5 cm and 7 cm respectively. If the height to which the water will rise in the cylinder is 0.k cm, then find the value of k.
HARD
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 11
A cylinder whose height is two thirds of its diameter, has the same volume as a sphere of radius 4 cm. Calculate the radius of the base of the cylinder.
HARD
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 21 - Surface Area and Volume of a Sphere>EXERCISE>Q 12
A vessel in the form of a hemispherical bowl is full of water. The contents are emptied into a cylinder. The internal radii of the bowl and cylinder are 6 cm and 4 cm respectively. Find the height of water in the cylinder.