Question

Alguem me ajuda nessa questao

Answer 1

p = (3+4+5)/2

p = 12/2 = 6

x = h = altura

A = √(p (p-5)(p-4)(p-3))

A = √(6 (6-5)(6-4)(6-3))

A = √(6 (1)(2)(3))

A = √36 = 6

A = (b * h)/2

12 = 5 * h

12/5 = h = 2,4