Cylinder and Its Surface Area
Trending Questions
Q. Volume of a cone is 6280 cubic cm and base radius of the cone is 30 cm. Find its perpendicular height. (= 3.14)
Q. The diameter of the base of a right circular cylinder is 20 m and its height is 21 m. Find its curved surface area.
- 1300 m2
- 1320 m2
- 210 m2
- 660 m2
Q.
If the curved surface area of a cylinder is 440 cm2 and its base radius is 7 cm then its height is:
- 4 cm
- 10 cm
- 1 cm
- 5 cm
Q. if ratio of the height of the two right circular cones is 5:2 and that of their base radii is 2:5, then the ratio of their volumes is
Q. Prove that the surface area of a sphere is equal to the curved surface area of the circumscribed cylinder
Q. 30 circular plates, each of radius 14 𝑐𝑚 and thickness 3 𝑐𝑚, are placed one above the other to form a cylindrical solid. Find the TSA and the volume of the cylinder so formed.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1773424/original_Q10L1O.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1773424/original_Q10L1O.png)
Q. A solid cylinder has a total surface area of 231 cm2. Its curved surface area is 23 of the total surface area. Find the volume of the cylinder.
Q. The total surface area of a solid right circular cylinder whose radius is half of its height h is equal to
- 32πh sq. units
- 23πh sq. units
- 23πh2 sq. units
- 32πh2 sq. units
Q. the radii of two cylinders are in the ratio 3:5andtheir height are in the ratio 2:3 find the ratio of their curved surface area?
Q. there is a solid cube of side 42 cm. a largest possible sphere is carved out from it. find the volume and surface area of the sphere so carved out.
Q.
the diameter of a sphere is decreased by 25% by what percentage its volume decreases?
Q. If the radius of a right circular cylinder open at both the ends is decreased by 25% and the height of the cylinder is increased by 25%, then the surface area of the cylinder thus formed is:
- Remains unaltered
- Increases by 25%
- Decreases by 25%
- Decreases by 6.25%
Q. A solid is hemispherical at the bottom and conical above it. The surface areas of the two parts are equal .The ratio of the volume of hemispherical part of the conical part is
- 2:√3
- 1:1
- 1:√3
- 3:√3