Question

The perimeter of a triangle is 26.6cm. Two of its sides are 7.1cm and 9cm. Find the length of the third side of the triangle.

Answer 1

7.1+9=26.6
17.1=26.6
26.6-17.1
9.1

Answer 2

Answer: 10.5 cm

Step-by-step explanation:

Perimeter of a figure = Sum of all its sides

26.6 = 7.1 + 9 + x

x = 26.6- 16.1

x= 10.5 cm