Question

the perimeter of triangle whose sides are 10 cm,12 cm and 18cm​

Answer 1

Perimeter of Triangle = a + b + c

= 10 + 12 + 18

= 22 + 18

= 40 cm

Perimeter of the Triangle = 40 m

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Answer 2

Perimeter of a triangle=sum of its all three sides

as in this case :

side1- 10cm

side2- 12cm

side3- 18cm

therefore:

perimeter= 10+12+18

40cm

hence ans is 40cm