EASY
9th CBSE
IMPORTANT
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If the radius of a sphere is 2r, then its volume will be

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Important Questions on Mensuration

MEDIUM
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q A
In a cylinder, if the radius is doubled and height is halved, then curved surface area will be
MEDIUM
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q A
The radii of two cylinders are in the ratio of  2:3 and their heights are in the ratio of 5:3. The ratio of their volume is
MEDIUM
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q A
A cylinder and a cone have equal base radius. If their volumes are same, then the ratio of the height of the cylinder to the height of the cone is
EASY
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q A
If the radius of cylinder is doubled and its curved surface area is not changed, then its height must have to be
EASY
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q B
When two identical cubes are joined end to end, if side of each cube is 2 cm then, height of the new cuboid is 4 cm.
EASY
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q B
The total surface area of a hemisphere of the radius ‘r’ is 3πr2
EASY
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q B

Edge of a cube is l. Its volume is l3.

EASY
9th CBSE
IMPORTANT
Activity Plus in Mathematics>Chapter 5 - Mensuration>Enrichment Exercise>Q B
If dimensions of a cuboid are 2a, 3b and 4c, then its total surface area is 24abc square units.