Question

the length of a side of a triangle is 6 cm. the second side is twice the third side. if the primeter of the triangle is 18 cm,find the side of a triangle​

Answer 1

$\bf{\underline{Question:-}}$

The length of a side of a triangle is 6 cm. the second side is twice the third side. if the primeter of the triangle is 18 cm,find the side of a triangle

$\bf{\underline{Given:-}}$

• length=6cm
• Let the 3rd side be x,
• then second side will be 2x
• perimeter=18cm

† perimeter = sum all sides of triangle

$\bf{\underline{Solution:-}}$

→ 18=x+2x+6

→ 18=3x+6

→ 18-6=3x

→ 12=3x

→ 12/3=x

→ 4cm=x

→ 2x=2×4

→ 8cm

$\bf{\underline{Hence:-}}$

• Second side = 4cm
• Third side = 8cm respectively

___________________________