Question

the perimeter of a triangle is 75 cm .two of the sides are 25 and 30 cm , find the third side,
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Answer 1

Answer:

Hence, the third side is equal to 25 cm.

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Step-by-step explanation:

Sides of triangle = 20 cm and 30  cm

Perimeter of a triangle = 75 cm

The third side​ = ?

Perimeter of triangle = a + b + c

Let it's third side be x.

⇒ Perimeter = a + b + c

⇒ 75 = 20 + 30 + x

⇒ 75 = 50 + x

⇒ 75 - 50 = x

⇒ 25 = x