English

The volume of the largest right circular cone that can be fitted in a cube whose edge is 2r equals to the volume of a hemisphere of radius r. - Mathematics

Advertisements
Advertisements

Question

The volume of the largest right circular cone that can be fitted in a cube whose edge is 2r equals to the volume of a hemisphere of radius r.

Options

  • True

  • False

MCQ
True or False

Solution

This statement is True.

Explanation:

Given, edge of cube = 2r, then height of cube becomes h = 2r.

Volume of a cone = `1/3 pir^2h = 1/3 pir^2(2r) = 2/3 pir^3`

Volume of a hemisphere = `2/3 pir^3`

Hence, the volume of a cone is equal to the volume of a hemisphere.

shaalaa.com
  Is there an error in this question or solution?
Chapter 13: Surface Area & Volumes - Exercise 13.2 [Page 124]

APPEARS IN

NCERT Exemplar Mathematics [English] Class 9
Chapter 13 Surface Area & Volumes
Exercise 13.2 | Q 5. | Page 124

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter is 28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if 1 cm3 of wood has a mass of 0.6 g.

`["Assume "pi=22/7]`

 


From a solid cylinder whose height is 16 cm and radius is 12 cm, a conical cavity of height 8 cm and of base radius 6 cm is hollowed out. Find the volume and total surface area of the remaining solid.


A cylinder has a diameter of 20 cm. The area of the curved surface is 100 cm2 (sq. cm). Find the height of the cylinder correct to one decimal place. 


A cylinderical container with a diameter of base 42 cm contains sufficient water to submerge a rectangular solid of iron with dimesions 22 cm × 14 cm × 10.5 cm. Find the rise in level of the water when the solid is submerged.


A rectangular piece of paper 11 cm × 4 cm is folded without overlapping to make a cylinder of height 4 cm. Find the volume of the cylinder.

A cylindrical glass with diameter 20 cm has water to a height of 9 cm. A small cylindrical metal of radius 5 cm and height 4 cm is immersed it completely. Calculate the raise of the water in the glass?


The ratio of the volumes of a cylinder, a cone and a sphere, if each has the same diameter and same height is


Find the number of coins, 1.5 cm in diameter and 2 mm thick, to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm


How many cubic metres of earth must be dug to construct a well 7 m deep and of diameter 2.8 m?


From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1 hour.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×