Advertisements
Advertisements
Question
Find the volume of the hollow sphere whose inner diameter is 8 cm and the thickness of the material of which it is made is 1 cm .
Advertisements
Solution
Inner diameter = 8 cm
Inner radius = r = 4 cm
Outer radius = R = 4cm + 1cm thick material = 5 cm
Volume of hemisphere = `2/3pir^3`
Required Volume = `4/3pi(R^3 - r^3)`
= `4/3 xx 22/7 xx (5^3 - 4^3)`
= `4/3 xx 22/7 xx 61`
= 255.6 cm3
Required volume= 255.6 cm3
RELATED QUESTIONS
Find the surface area of a sphere of diameter 3.5 m.
`["Assume "pi=22/7]`
The diameter of the moon is approximately one-fourth of the diameter of the earth. Find the ratio of their surface area.
A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl.
`["Assume "pi = 22/7]`
A cylinder of same height and radius is placed on the top of a hemisphere. Find the curved
surface area of the shape if the length of the shape be 7 cm.
If the number of square centimeters on the surface of a sphere is equal to the number of cubic centimeters in its volume, what is the diameter of the sphere?
A cone, a hemisphere and a cylinder stand on equal bases and have the same height. The ratio of their volumes is
Find the surface area of a sphere, if its volume is 38808 cubic cm. `(π = 22/7)`
The radius of a sphere is 9 cm. It is melted and drawn into a wire of diameter 2 mm. Find the length of the wire in metre.
Find the radius of the sphere whose surface area is equal to its volume .
A sphere cut out from a side of 7 cm cubes. Find the volume of this sphere?
