# Length + sphere - math problems

#### Number of problems found: 12

• 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 cm2, and the weight is 136 kg. What is its density?
• Sphere slices Calculate the volume and surface of a sphere if the radii of parallel cut r1=31 cm, r2=92 cm, and its distance v=25 cm.
• 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
• Earth parallel Earth's radius is 6370 km long. Calculate the length parallel of latitude 50°.
• 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
• Shots 5500 lead shots with diameter 4 mm is decanted into a ball. What is it diameter?
• Earth rotation How fast is the place on the Earth's equator moving if the Earth's radius is 6378 km?
• 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).
• 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.

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