中等MATH-GEOM-003
What is the distance between (0, 0) and (3, 4)?
A. 5✓ 答案
B. 7
C. 25
D. √7
解說
√(3^2 + 4^2) = √(9 + 16) = √25 = 5. The value 25 is the square of the distance. Adding the coordinates gives 7, which is not the distance.
√(3^2 + 4^2) = √(9 + 16) = √25 = 5. The value 25 is the square of the distance. Adding the coordinates gives 7, which is not the distance.