Question

find the length of 3rd side of a triangle whose perimeter is 40cm and two sides are 16cm and 12cm​

Answer 1

Answer:

Step-by-step explanation:

perimeter of triangle = side +side +side

let one side be = x

perimeter = x + 16+ 12 =40

x + 28 =40

x=40-28

x=12

Answer 2

12

Step-by-step explanation:

perimeter is the sum of all the sides.

Assume the third side be x

i.e, 12 + 16 + x = 40

28 + x = 40

x = 40-28

x = 12

hope you understood

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