Chord
In a circle with a radius r=60 cm is the chord, 4× longer than its distance from the center. What is the length of the chord?
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
- arithmetic
- square root
- square (second power, quadratic)
- planimetrics
- Pythagorean theorem
- right triangle
- circle
- triangle
- chord
Units of physical quantities:
Grade of the word problem:
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