Question

Calcule o perímetro do triângulo (6,8) (1,-4) e (6-4)

Answer 1

√(x-x')+(y-y')

a- A(6,8), B(1,-4) e C(6,-4)

AB

√(6-1)²+(8+4)² =  

√25 + 144 =

√ 169 =  

13

BC

√(1-6)²+(-4+4)²

√25 =  

5

CA

√(6-6)²+(-4-8)²=

√144=

12

Perímetro:

12+5+13 = 30