Question

a triangle has a perimeter of 60 cm. if its two sides are of length 18 cm and 20 cm, what is the length of the third side​

Answer 1

Answer:

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Answer 2

Answer:

Perimeter of a triangle = 60 cm

Length of one side = 18 cm

Length of second side = 20 cm

Length of third side = ?

Let the third side be x

Perimeter = a + b + c

60 = 18 + 20 + x

60 = 38 + x

x = 60 - 38

x = 22

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