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.

Your answer:

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You need to know the following knowledge to solve this word math problem:

algebra

rearrange variables

solid geometry

sphere
surface area

planimetry

circle
perimeter

Units of physical quantities

volume

Grade of the word problem

practice for 12 year olds
practice for 13 year olds

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