# Length + sphere - practice problems

#### Number of problems found: 13

- Surveyors

Surveyors mark 4 points on the surface of the globe so that their distances are the same. What is their distance from each other? - Earth rotation

How fast is the place on the Earth's equator moving if the Earth's radius is 6378 km? - The Earth

The Earth's surface is 510,000,000 km². Calculates the radius, equator length, and volume of the Earth, assuming the Earth has the shape of a sphere. - What percentage

What percentage of the Earth’s surface is seen by an astronaut from a height of h = 350 km. Take the Earth as a sphere with the radius R = 6370 km - Alien ship

The alien ship has the shape of a sphere with a radius of r = 3000m, and its crew needs the ship to carry the collected research material in a cuboid box with a square base. Determine the length of the base and (and height h) so that the box has the large - Moon

We see Moon in the perspective angle 28'. Moon's radius is 1740 km at the time of the full moon. Calculate the mean distance of the Moon from the Earth. - Average speed

What is the average speed you have to move the way around the world in 80 days? (Path along the equator, round to km/h). - Iron sphere

Iron sphere has weight 100 kg and density ρ = 7600 kg/m³. Calculate the volume, surface, and diameter of the sphere. - Cube in a sphere

The cube is inscribed in a sphere with a volume 7253 cm³. Determine the length of the edges of a cube. - Sphere

The surface of the sphere is 12100 cm^{2}, and the weight is 136 kg. What is its density? - Shots

5500 lead shots with diameter 4 mm are decanted into a ball. What is its diameter? - Earth parallel

Earth's radius is 6370 km long. Calculate the length parallel of latitude 50°. - Sphere slices

Calculate the volume and surface of a sphere if the radii of parallel cut r_{1}=31 cm, r_{2}=92 cm, and its distance v=25 cm.

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Do you want to convert length units? Length - practice problems. Sphere practice problems.