MEDIUM
9th CBSE
IMPORTANT
Earn 100

Find the curved surface area, surface area and volume of a hemisphere of radius 21 cm.

Important Questions on Surface Areas and Volumes

MEDIUM
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 3
The volume of a sphere is 38808 cu cm. Find its surface area.
EASY
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 4
Find the volume of a sphere whose surface area is 154 cm2.
MEDIUM
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 5
The diameter of a cylinder is 24 cm its height is 20 cm. It is filled with com flour powder. How many hemispherical cup of radius 3 cm are required if the entire com flour is filled in each hemispherical cup, fully.
HARD
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 6
A hemispherical dome of a building needs to be painted. If the circumference of the base of the dome is 17.6 m, find the cost of painting it. Given the cost of painting is ₹ 5 per 100 cm2.
HARD
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 7
Vinayak got a playing top (lattu) as his birthday present which surprisingly had no colour on it. He wanted to colour it with his crayons. The top is shaped like a cone surmounted by a hemisphere. The entire top is 5 cm in height and the diameter of the top is 3.5 cm. Find the area he has to colour.
MEDIUM
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 8
A boy has a spherical sweet of radius 4 cm. A girl has 8 spherical sweets each of radius 2 cm. Find the ratio of the volume of the sweets the boy has to the sweets the girl has.
MEDIUM
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 9
Surface area of a sphere of radius 5 cm is 5 times the area of the curved surface of a cone of radius 4 cm. Find the height of the cone.
MEDIUM
9th CBSE
IMPORTANT
MATHEMATICS>Chapter 13 - Surface Areas and Volumes>EXERCISES>Q 10
If the diameter of a sphere is decreased by 25% by what percent its curved surface of a cone of radius 4 cm. Find the height of the cone.