EASY
9th CBSE
IMPORTANT
Earn 100

A sector of a circle of radius 9 cm and central angle of 120°. It is rolled up so that the two bounding radii are joined together to form a cone.

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the slant height of the cone.

Important Questions on Surface Areas and Volumes

MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 50
A sector of a circle of radius 9 cm and central angle of 120°. It is rolled up so that the two bounding radii are joined together to form a cone.

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the radius of the base of the cone.

MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 50
A sector of a circle of radius 9 cm and central angle of 120°. It is rolled up so that the two bounding radii are joined together to form a cone.

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the volume of the cone.

MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 50
A sector of a circle of radius 9 cm and central angle of 120°. It is rolled up so that the two bounding radii are joined together to form a cone.

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the total surface area of the cone.

EASY
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Challengers*>Q 1
A hemispherical bowl is 176 cm and round the brim. Supposing it to be half-filled, then how many persons may be served frotn it in hemi-spherical glasses 4 cm in diameter at the top?
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Challengers*>Q 2
The sum of the radii of two spheres is 10 cm and the sum of their volumes is 880 cm3. Then what will be the product of their radil?
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Challengers*>Q 3
A child consumed an ice-cream of inverted right circular conical shape from the top and left only 12.5% of the cone for her mother. If the height of the ice-cream cone was 8 cm, then what was the height of the remaining ice-cream cone?
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Challengers*>Q 4
The radius and height of a right solid circular cone ABC are respectively 6 cm and 27 cm. A coaxial cone DEF of radius 3 cm and height 7 cm is cut out of the cone as shown in the given figure. Then what is the whole surface area of the solid thus fotmed?

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