Right Circular Cylinder
Trending Questions
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.
- cube
- sphere
- cone
- another cylinder
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
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.
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
- True
- False
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
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.
- 6.2m2
- 4.4m2
- 6m2
- 4m2
- False
- True
- False
- True
- 16π cm3
- 8 cm
- 54π cm3
- 3 cm
- 445 cm3
- 795 cm3
- 686.4 cm3
- 885.6 cm3
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
- 686.4 cm3
- 885.6 cm3
- 445 cm3
- 795 cm3