# Right Circular Cylinder

## Trending Questions

**Q.**

Assertion: A cone is a solid figure.

Reason: A cone is generated when rectangular sheet is rotated about its axis.

Which of the following is correct?

- If both assertion and reason are true and reason is the correct explanation of assertion
- If assertion is true but reason is false.
- If both assertion and reason are true but reason is not the correct explanation of assertion.
- If assertion is false but reason is true.

**Q.**Volume of a cylinder is three times the volume of a

- cube
- sphere
- cone
- another cylinder

**Q.**

The front compound wall of a house is decorated by wooden spheres of diameter 21 cm, placed on small supports as shown in the given figure. Eight such spheres are used for this purpose and are to be painted silver.

Each support is a cylinder of radius 1.5 cm and height 7 cm and is to be painted black.

Find the cost of paint required if silver paint costs 25 paise per cm2 and black paint costs 5 paise per cm2.

Rs. 1784.26

Rs. 2734.26

Rs. 2784.26

Rs. 6784.26

**Q.**A cone of height 24cm and radius of base 6cm is made up modelling clay. A child moulds it in the form of sphere. Find the radius of the sphere.

**Q.**Question 9

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder, as shown in figure. If the height of the cylinder is 10 cm, and its base is of radius 3.5 cm, find the total surface area of the article.

**Q.**

Raghu had to make a cylindrical tube with an aluminium cover. What is the area of the aluminium sheet he needs to cover the tube if the tube has a length of 1m and base radius 3.5cm? (Take π=22/7)

- 1100cm2
- 2200cm2
- 1500cm2
- 3300cm2

**Q.**Volume of this solid shape = Volume of cone + Volume of cylinder

- True
- False

**Q.**

Raghu had to make a cylindrical tube with an aluminium cover. What is the area of the aluminium sheet he needs to cover the tube if the tube has a length of 1m and base radius 3.5cm? (Take π=22/7)

=2100cm2

=1700cm2

=1200cm2

=2200cm2

**Q.**

If a right circular cylinder and cone have same height and same base radius then the volume of cylinder is equal to what times of the volume of cone.

**Q.**In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5 cm. The total radiating surface in the system.

- 6.2m2
- 4.4m2
- 6m2
- 4m2

**Q.**Volume of this solid shape = Volume of cone + Volume of cylinder

- False
- True

**Q.**Volume of this solid shape = Volume of cone + Volume of cylinder

- False
- True

**Q.**Match the unknown x for a cylinder with radius 'r ', height '2r' and volume 'V' (all measures in cm).

- 16π cm3
- 8 cm
- 54π cm3
- 3 cm

**Q.**From a solid cube of side 7 cm, a conical cavity of height 7 cm and radius 3 cm is hollowed out. Find the volume of the remaining solid.

**Q.**If a cylindrical vessel has a hemispherical bottom with radius 4 cm and height 15 cm, then its volume is

- 445 cm3
- 795 cm3
- 686.4 cm3
- 885.6 cm3

**Q.**A cylinder has hemispherical ends having radius 7 cm and total height of solid is 104 cm. If its outer surface is to be polished and cost of polish is rs 100 per.sq.mtr find the total cost of polish.

**Q.**

a solid consists of a circular cylinder surmounted by a right circular cone. the height of the cone is h. if the total height of the solid is 3 times the volume of the cone then the height of the cylinder is?? options: A) 2h B) 3h/2 C) h/2 D) 2h/3

**Q.**If a cylindrical vessel has a hemispherical bottom with radius 4 cm and height 15 cm, then its volume is

- 686.4 cm3
- 885.6 cm3
- 445 cm3
- 795 cm3

**Q.**The internal and external diameters of a hollow hemi-spherical vessel are 24 cm and 25 cm respectively. The cost of painting 1 square cm of the surface is Rs 1.7. Find the total cost to paint the vessel all over (ignore the area of edge).