Above Earth
To what height must a boy be raised above the earth to see one-fifth of its surface?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- solid geometry
- sphere
- surface area
- spherical cap
- planimetrics
- Pythagorean theorem
- right triangle
- triangle
- numbers
- fractions
Units of physical quantities:
Grade of the word problem:
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