Question

two sides of a triangle are 5 cm and 4 cm the perimeter of the triangle is 12 CM the third side has length​

Answer 1

Answer:

third side length is 3cm

Answer 2

let x be the langth of the third side

peri. of triangle=sum of all three sides of triangle

35=10+12+x

35=22+x

35-22=x

therefore, x= 13cm