Question

The perimeter of a triangle is 72.If two sides are of length 27m and 30 m,find the third side.​

Answer 1

15m

Step-by-step explanation:

Let the third side be x

Perimeter of triangle = sum of three sides

So, perimeter = 72m

72m = 27m + 30m + x

72m - 27m - 30m = x

72m - 57m = x

15m = x

So, the third side of triangle is 15m.

Answer 2

Answer:

Perimeter of triangle=72m

Two sides=27m

Third side=Perimeter-(Sum of two sides)

=72m-(27+30m) =72m-57m=15m