Solution:
Let the length of third side = x cm
Perimeter of triangle = sum of all its sides
100 cm = 30+40+x
100 cm=70+x
x=30 cm
MathematicsIf perimeter of a triangle is 100 cm and the length of two sides are 30 cm and 40 cm, the length of third side will be:
If perimeter of a triangle is 100 cm and the length of two sides are 30 cm and 40 cm, the length of third side will be:
