Chapter 13 – Surface Areas and Volumes
4. If the radius of a cylinder is doubled and its curved surface area is not changed, the height must be halved.
03
Jul
4. If the radius of a cylinder is doubled and its curved surface area is not changed, the height must be halved. 4. If the radius of a cylinder is doubled and its curved surface area is not changed the height must be halved. July 3, 2021 Category: Chapter 13 - Surface Areas and Volumes [...]
3. In a right circular cone, height, radius and slant height do not always be sides of a right triangle.
03
Jul
3. In a right circular cone, height, radius and slant height do not always be sides of a right triangle. 3. In a right circular cone height radius and slant height do not always be sides of a right triangle. July 3, 2021 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT [...]
2. If the radius of a right circular cone is halved and height is doubled, the volume will remain unchanged.
03
Jul
2. If the radius of a right circular cone is halved and height is doubled, the volume will remain unchanged. 2. If the radius of a right circular cone is halved and height is doubled the volume will remain unchanged. July 3, 2021 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT [...]
1. The volume of a sphere is equal to two-third of the volume of a cylinder whose height and diameter are equal to the diameter of the sphere.
03
Jul
1. The volume of a sphere is equal to two-third of the volume of a cylinder whose height and diameter are equal to the diameter of the sphere. 1. The volume of a sphere is equal to two-third of the volume of a cylinder whose height and diameter are equal to the diameter of the [...]
10. The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is
03
Jul
10. The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is 10. The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into [...]
9. The length of the longest pole that can be put in a room of dimensions (10 m × 10 m × 5m) is
03
Jul
9. The length of the longest pole that can be put in a room of dimensions (10 m × 10 m × 5m) is 9. The length of the longest pole that can be put in a room of dimensions (10 m × 10 m × 5m) is July 3, 2021 Category: Chapter 13 - [...]
8. The number of planks of dimensions (4 m × 50 cm × 20 cm) that can be stored in a pit which is 16 m long, 12m wide and 4 m deep is
03
Jul
8. The number of planks of dimensions (4 m × 50 cm × 20 cm) that can be stored in a pit which is 16 m long, 12m wide and 4 m deep is 12m wide and 4 m deep is 8. The number of planks of dimensions (4 m × 50 cm × 20 [...]
7. The lateral surface area of a cube is 256 m^2. The volume of the cube is
03
Jul
7. The lateral surface area of a cube is 256 m^2. The volume of the cube is 7. The lateral surface area of a cube is 256 m^2. The volume of the cube is July 3, 2021 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
6. 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 volumes is:
03
Jul
6. 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 volumes is: 6. 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 volumes is: July [...]
5. The total surface area of a cone whose radius is 2/r and slant height 2l is
03
Jul
5. The total surface area of a cone whose radius is 2/r and slant height 2l is 5. The total surface area of a cone whose radius is 2/r and slant height 2l is July 3, 2021 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,