MEDIUM
9th CBSE
IMPORTANT
Earn 100

A hemispherical bowl is made of 0.50 cm thick brass. The inner radius of the bowl is 6 cm. Find the inner and outer curved surface areas and volume of the bowl.

Important Questions on Surface Areas and Volumes

EASY
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 46
A spherical ball is divided into two equal halves. If the curved surface area of each half is 56.57 cm2, then find the volume of the spherical ball.
HARD
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 47
The volumes of the two spheres are in the ratio 64 : 27 . Find the ratio of their surface areas.
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 48
A cloth having an area of 165 m2 is shaped into the form of a conical tent of radius 5 m. How many students can sit in a tent, if a student on an average, occupies 57 m2 on the ground?
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 48
A cloth having an area of 165 m2 is shaped into the form of a conical tent of radius 5 m. Find the volume of the cone.
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 49
To maintain beauty of a monument, the students of the school cleaned and painted the dome of the monument. The monument is in the form of a hemisphere. From inside, it was white washed by the students whose area is 249.48 m2,  Find the volume of the air inside the dome.
MEDIUM
9th CBSE
IMPORTANT
All in One Mathematics>Chapter 11 - Surface Areas and Volumes>Exam Practice>Q 49
To maintain beauty of a monument, the students of the school cleaned and painted the dome of the monument. The monument is in the form of a hemisphere. From inside, it was white washed by the students whose area is 249.48 m2, find the volume of the air inside the dome, if white washing costs ₹2 per m2, how much does it costs?
EASY
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.

Question Image   

the slant height 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.

Question Image   

the radius of the base of the cone.