Advertisements
Advertisements
प्रश्न
If the surface area of a sphere is 144π m2, then its volume (in m3) is
पर्याय
288 π
316 π
300 π
188 π
Advertisements
उत्तर
In the given problem,
Surface area of a sphere = 144 π m2
So,
` 4 pi r^2 = 144 pi `
`r^2 = 144/4`
`r^2 = 36`
`r = sqrt(36)`
r = 6
Now, using the formula volume of the sphere, we get
`4/3 pi r^3 = 4/3 pi (6)^3`
` = 4/3 pi (216)`
`= 288 pi`
Therefore, volume of the sphere is `288 pi` .
APPEARS IN
संबंधित प्रश्न
Find the surface area of a sphere of diameter 21 cm.
`["Assume "pi=22/7]`
Find the surface area of a sphere of diameter 3.5 m.
`["Assume "pi=22/7]`
Find the surface area of a sphere of diameter 21 cm.
Assuming the earth to be a sphere of radius 6370 km, how many square kilo metres is area
of the land, if three-fourth of the earth’s surface is covered by water?
The volume of a sphere is 38808 cm3; find its diameter and the surface area.
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?
Metallic spheres of radii 6 cm, 8 cm and 10 cm respectively are melted and recasted into a single solid sphere. Taking π = 3.1, find the surface area of the solid sphere formed.
A hemi-spherical bowl has negligible thickness and the length of its circumference is 198 cm. Find the capacity of the bowl.
A solid is in the form of a cone standing on a hemi-sphere with both their radii being equal to 8 cm and the height of cone is equal to its radius. Find, in terms of π, the volume of the solid.
If a sphere is inscribed in a cube, find the ratio of the volume of cube to the volume of the sphere.
If the ratio of volumes of two spheres is 1 : 8, then the ratio of their surface areas is
The model of a building is constructed with the scale factor 1 : 30.
(i) If the height of the model is 80 cm, find the actual height of the building in meters.
(ii) If the actual volume of a tank at the top of the building is 27m3, find the volume of the tank on the top of the model.
Find the surface area and volume of sphere of the following radius. (π = 3.14 )
9 cm
Find the length of the wire of diameter 4 m that can be drawn from a solid sphere of radius 9 m.
Find the radius of a sphere whose surface area is equal to the area of the circle of diameter 2.8 cm
Find the volume and surface area of a sphere of diameter 21 cm.
The radius of two spheres are in the ratio of 1 : 3. Find the ratio between their volume.
The radius of a sphere is 10 cm. If we increase the radius 5% then how many % will increase in volume?
The internal and external diameters of a hollow hemispherical vessel are 20 cm and 28 cm respectively. Find the cost to paint the vessel all over at ₹ 0.14 per cm2
A solid sphere is cut into two identical hemispheres.
Statement 1: The total volume of two hemispheres is equal to the volume of the original sphere.
Statement 2: The total surface area of two hemispheres together is equal to the surface area of the original sphere.
Which of the following is valid?
