Question

2
3
4. If the perimeter of a triangle is 65 cm
and the lengths of two of its sides are
1
1
2-cm and 3-cm, find the length of
2
3
the third side.​

Answer 1

let the length of 3rd side is X

perimeter of triangle =65cm

perimeter of triangle=sum of 3 sides

65=2+(-3)+X

65=-1+X

65+1=X

X=66

hence the length of 3rd side of triangle is 66 cm