Question

Two sides of a triangle are 12 cm qnd 14 cm. The perimeter of the triangle is 36 cm. What is the length of third side?

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Answer 1

Given :-

Two sides of a triangle are 12 cm and 14 cm. The perimeter of the triangle is 36 cm.

To Find :-

Length of third side

Solution :-

Let the third side be 'x'

Perimeter = a + b + c

36 = 12 + 14 + x

36 = 26 + x

36 - 26 = x

10 = x

Therefore

The third side of triangle is 10 cm

Answer 2

Given :-

• Two sides of a triangle are 12 cm qnd 14 cm. The perimeter of the triangle is 36 cm. What is the length of third side?

To Find :-

• Third side of triangle ?

Solution :-

• Perimeter of triangle = 36 cm

• First side of triangle = 12 cm.

• Second side of triangle = 14 cm.

• Let the third side be "x"

As we know that,

Perimeter of triangle = sum of all sides

Now, substitute the values :-

→ 36 = 12 + 14 + x

→ 36 = 26 + x

→ 36 - 26 = x

→ 10 = x

Hence,

• The third side of triangle is 10 cm.