答案:登入後查看
統計: A(33), B(325), C(14), D(6), E(0) #296464
統計: A(33), B(325), C(14), D(6), E(0) #296464
詳解 (共 1 筆)
#973257
直線PQ=( (2-1)^2 + (5-3)^2 ) ^ (1/2)
=(1+4) ^ (1/2)
=5^(1/2)
3
0