Question

Calcular o perímetro do triângulo Abc com as coordenadas A(1,2)B(3,1)C(2,4)

Answer 1

Olá Cleudilene 

A(1,2), B(3,1), C(2,4)

AB² = 2² + 1² = 4 + 1 = 5,   AB = √5

AC² = 1² + 2² = 1 + 4 = 5,   AC = √5

BC² = 1² + 3² = 1 + 9 = 10, BC = √10

P = 2√5 + √10 = 7.63 

.