Question

Two sides of a triangle are 3 m and 5 m. The perimeter of the triangle is 12 m. What's the third side?

Answer 1

Answer:

given sides are 3m and 5m respectively that means third side is also unequal.

Step-by-step explanation:

3m+5m+x= 12 m

x=4m ans

hope answer is correct

Answer 2

Answer:

The third side is 4 m.

Step-by-step explanation:

Given :

The two sides of the triangle are 3 m and 5 m.

The perimeter of the triangle is 12 m.

Let the length of the third side is x m.

Formula to be Used :

Perimeter is defined as the boundary of any two dimensional of one dimensional figure.

The perimeter of a triangle is = Sum of the length of all sides.

Calculation :

We have :

The perimeter of a triangle = Sum of the length of all sides.

Perimeter = 3 + 5 + x

3 + 5 + x = 12

x = 12 - ( 5+3)

x = 12 - 8

x = 4 m

Hence, the third side of the given triangle whose perimeter is 12 m is 4 m.

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