Question

Two sides of a triangle are 12cm and 8cm. If the perimeter of the triangle is 26cm, find the length of the third side.

Answer 1

Answer:

6cm

Step-by-step explanation:

Perimeter of the given triangle = 26cm

Total sum of the length of its two sides = (12 + 8)cm

                                           = 20cm

Therefore, length of its third side = (26 - 20)cm

                                       = 6cm

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Answer 2

Answer:

Ans-7cm

Step-by-step explanation:

Perimeter = sum of three sides = 9cm + 8cm + x = 24cm

Therefore x = 24cm - (9cm + 8cm) = 7cm

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