# Perimeter + sphere - math problems

#### Number of problems found: 6

• 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.
• Earth's circumference Calculate the Earth's circumference of the parallel 48 degrees and 10 minutes.
• Earth parallel Earth's radius is 6370 km long. Calculate the length parallel of latitude 50°.
• 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).
• Rotation of the Earth Calculate the circumferential speed of the Earth's surface at a latitude of 61°​​. Consider a globe with a radius of 6378 km.
• What is bigger? Which ball has a larger volume: a football with a circumference of 66 cm or a volleyball with a diameter of 20 cm?

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Perimeter - math word problems. Sphere Problems.