Question

the perimeter of a triangle is 12 cm and the length of one side is 5.2 cm . Then the sum of the lengths of other two sides is --- ​

Answer 1

Answer:

6.8 cm

Step-by-step explanation:

As triangle has three sides it is obvious that the sum of two sides = sum of all sides- the given side.

So, the sum of the lengths of other two sides = 12cm - 5.2 cm

                                                                           = 6.8 cm

Answer 2

Given:

The perimeter of a triangle is 12 cm

The length of one side is 5.2 cm

To find:

The sum of the lengths of other two sides.

Solution:

Every triangle has three sides.

The perimeter of a triangle is simply the sum of its three sides.

Let a, b , c be the sides of the triangle.

The perimeter of a triangle is 12 cm

The length of one side is 5.2 cm

Perimeter = a + b + c

12 = 5.2 + b + c

b + c = 12 - 5.2

b + c = 6.8 cm

The sum of the lengths of other two sides = 6.8 cm

Final answer:

The sum of the lengths of other two sides of triangle is 6.8 cm