Question

21. Two sides of a triangle are 12
cm and 14 cm. The perimeter of
the triangle is 36 cm. What is
thethird side *
O 10cm
O 5cm
O 15cm
O (d) none of these​

Answer 1

$\huge \underbrace \mathfrak \red{Answer \: ⤵}$

let the third side be x.

then,we know that perimeter of a triangle is sum of its sides.

12cm +14cm+x=36cm

26cm+x=36cm

x=36cm -26cm

x=10cm

HOPE SO IT WILL HELP....

Answer 2

Answer

$\green{\bigstar}$ The third side of triangle $\leadsto$ $\boxed{\sf{\red{10~cm}}}$

• Given

• Two sides of triangle -
• First side = 12cm
• Second side = 14 cm
• Perimeter of triangle = 36 cm

• To find

• Third side of triangle

• Solution

Let the third side of triangle be x cm.

$\purple{\bigstar}$ $\boxed{\underline{\sf{Perimeter = Sum~of~all~sides}}}$

Substitute the given values,

⟶ 36 = 12 + 14 + x

⟶ 36 = 26 + x

⟶ 10 = x

The values of x = 10

The third side of triangle ⟶ 10 cm.

Answer ⟶ Option (1) 10 cm

_______________________________

Let's verify -

$\purple{\bigstar}$ $\boxed{\underline{\sf{Perimeter = Sum~of~all~sides}}}$

Perimeter of the triangle = 36 cm

Measure of all sides ⟶ 12 cm, 14 cm, 10 cm.

Substituting the values,

⟶ 12 + 14 + 10

⟶ 36 cm

$\green{\bigstar}$Hence, verified.