Question

Each of the 2 equal sides of an isosceles triangle is twice as large as the third side. If the perimeter of the triangle is 30 cm, find the length of each side of the triangle.



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Answer 1

Answer:

6,12 and 12 cm

Step-by-step explanation:

Let an isosceles triangle have equal sides in length of 2x cm

So, x cm be the third side of the triangle

Perimeter of the triangle =30 cm

⇒ x+2x+2x=30

⇒ 5x=30

⇒ x=

5

30

⇒ x=6

Therefore, the required sides of the isosceles triangle are 6,12 and 12 cm

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Answer 2

Answer:

let third side be x

equal side 2x

perimeter =x+2x+2x

30=5x

x=6

third side =6cm

equal side 6×2=12

Step-by-step explanation:

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