Question

The perimeter of a triangle is 64 cm, if two of its sides are 20 cm and 30 cm ,length of third side is;

1 point

14 cm

34 cm

40 cm

114 cm

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Answer 1

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$\: \:$

Given =

Find the 3rd side of the triangle.

Let the third side be x

So,

{Perimeter of a triangle = A + B + C}

Therefore,

20 + 30 + x = 64

50 + x = 64

x = 64 - 50

x = 14 cm

$\: \:$

Therefore,

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Answer 2

Answer:

Given =Find the 3rd side of the triangle.

Let the third side be x

So,

{Perimeter of a triangle = A + B + C}

Therefore,

20 + 30 + x = 64

50 + x = 64

x = 64 - 50

x = 14 cm

so 14cm is correct option