Найдите расстояние между данными точками.
1)A(2;9), B(8;1)
2)K(-2;4), L(2;1)
3)M(4;13), N(13;10)
4)P(-5;0), R(2;-1)

1) AB^2 = (8 - 2)^2 + (1 - 9)^2 = 6^2 + (-8)^2 = 36 + 64 = 100
AB = 10

2) KL^2 = (2-(-2))^2 + (1-4)^2 = 4^2 + (-3)^2 = 16 + 9= 25
KL = 5

3) MN^2 = (13-4)^2 + (10-13)^2 = 9^2 + (-3)^2 = 81 + 9 = 90
MN = 3sqrt(10)

4) PR^2 = (2-(-5))^2 + (-1-0)^2 = 7^2 + (-1)^2 = 49 + 1 = 50
PR = 5sqrt(2)

AB = √((8-2)² + (9-1)²) = √(36 + 64) = √100 = 10

KL = √((2+2)² + (4-1)²) = √(16+9) = √25 = 5

MN = √((13-4)² + (13-10)²) = √(81 + 9) = √90 = 3√10

PR = √((2+5)² + (-1)²) = √(49 + 1) = √50 = 5√2