Question

two equal sides of a triangle is 3 times as large as third side if the perimeter is 20 cm find the sides of the triangle and write the equation and solve​

Answer 1

let the third side be X and the two equal side is 3x

then,

perimeter of triangle = sum of its all side

20= X+3x+3x

7x=20

X= 20÷7

X=2.85

Third side is 2.85 cm

two equal sides are 2.85× 3= 8.55

Answer 2

Step-by-step explanation:

1.let the third side = x

so, the two equal side is =3(x)

perimeter of a triangle= 28cm

a+b+c=28

3(x) + 3(x) + x =28

3x + 3x + x = 28

7x = 28

x = 28/ 7

x= 4

3x=3(7)=21

the other two sides are = 21