Question

Each of the two equal sides of an isosceles triangle is three times as large as the side. if the perimeter of the triangle is 28 cm, find each side of the triangle

Answer 1

let the non equal side be x.
x + 3x + 3 x = 28
7x =28
x = 4cm
equal sides = 12 cm

Answer 2

Each side of the triangle is "12 cm".

Step-by-step explanation:

Given,

The perimeter of the triangle = 28 cm

Let the two equal sides of an isosceles triangle = 3x cm and

the unequal side of an isosceles triangle = x cm

To find, each side of the triangle = ?

We know that,

The perimeter of the triangle = Sum of all sides

⇒ 3x + 3x + x = 28 cm

⇒ 7x = 28

⇒ x = $\dfrac{28}{7}$ = 4 cm

∴ $3x=3\times 4$ = 12 cm

Hence, each side of the triangle is "12 cm".