Question

Two equal sides of a triangle are3cm more than three times the third side. Find the sides of the triangle if its perimeter is 21cm

Answer 1

Answer:

let third side be x

therefore first side = 3+x

and second side =3+x

perimeter of triangle=sum of all sides

21cm= 3+x+3+x+x=3x+6

21-6=3x

15=3x

15/3=x=5cm=x

Therefore sides of triangle are

first=3+x=3+5=8cmthird

second=3+x=3+5=8cm

third=x=5cm

Hope it helps you......

Please mark it as brainliest..........