Question

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Answer 1

Answer:

Let the 3rd side be x

So other two sides 3x-4

Perimeter=55

So x+3x-4+3x-4=55

7x-8=55

7x=55+8

x=63/7=9

So 3rd side=9cm

Two equal sides=3x-4=27-4

=23

Step-by-step explanation:

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Answer 2

let 3rd side = x

each equal side = 3x - 4

so perimeter of the triangle = (3x-4)+(3x-4)+x=55m

= 7x - 8 = 55m

= 7x = 55m + 8

=7x = 63m

= x = 63/7 = 9m

there fore :- third side = 9m

each equal side = 3x - 4 = (3 x 9) - 4 = 23m

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