1.

Find the value of variable ‘x’ : If the perimeter of the following triangle is 15 cm

Answer»

Perimeter of a triangle = 15 cm 

Perimeter = x + x + 2 + 2x – 3 = 4x – 1 

∴ 4x – 1 = 15 

⇒ 4x = 15 + 1

⇒ 4x = 16 

⇒ x = 4



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