# Iron ball

The iron ball has a weight of 100 kilograms. Calculate the volume, radius, and surface if the iron's density is h = 7.6g/cm3.

Result

V =  13.158 dm3
r =  1.465 dm
S =  26.97 dm2

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 1 comment:
Math student
I think it’s wrong

#### To solve this example are needed these knowledge from mathematics:

Do you know the volume and unit volume, and want to convert volume units? Do you want to convert mass units?

## Next similar examples:

1. Volume of ball
Find the volume of a volleyball that has a radius of 4 1/2 decimeters. Use 22/7 for π
2. Fit ball
What is the size of the surface of Gymball (FIT - ball) with a diameter of 65 cm?
3. Hollow sphere
Calculate the weight of a hollow tungsten sphere (density 19.3 g/cm3), if the inner diameter is 14 cm and wall thickness is 3 mm.
4. Railway wagon
The railway wagon holds 75 m3 load. Wagon can carry a maximum weight of 30 tonnes. What is the maximum density that may have material with which we could fill this whole wagon? b) what amount of peat (density 350 kg/m3) can carry 15 wagons?
5. Aluminum wire
Aluminum wire of 3 mm diameter has a total weight of 1909 kg and a density of 2700 kg/m3. How long is the wire bundle?
6. Solid in water
The solid weighs in air 11.8 g and in water 10 g. Calculate the density of the solid.
7. Cylinder surface area
Volume of a cylinder whose height is equal to the radius of the base is 678.5 dm3. Calculate its surface area.
8. Cone area and side
Calculate the surface area and volume of a rotating cone with a height of 1.25 dm and 17,8dm side.
9. Cube volume
The cube has a surface of 384 cm2. Calculate its volume.
10. Ice cream in cone
In the ice cream cone with a diameter of 5.2 cm is 1.3 dl of ice cream. Calculate the depth of the cone.
11. Spheres in sphere
How many spheres with a radius of 15 cm can fits into the larger sphere with a radius of 150 cm?
12. Water well
Drilled well has a depth 20 meters and 0.1 meters radius. How many liters of water can fit into the well?
13. Gasholder
The gasholder has spherical shape with a diameter 20 m. How many m3 can hold in?
14. Digging
A pit is dug in the shape of a cuboid with dimensions 10mX8mX3m. The earth taken out is spread evenly on a rectangular plot of land with dimensions 40m X 30m. What is the increase in the level of the plot ?
15. Sphere fall
How many percent fall volume of sphere if diameter fall 10×?
16. Sphere growth
How many times grow volume of sphere if diameter rises 10×?
17. Earth's surface
The greater part of the earth's surface (r = 6371 km) is covered by oceans; their area is approximately 71% of the Earth's surface. What is the approximate area of the land?