Question

in an isoscles triangles each of the two equal sides is 10 cm less than three times of the base. if perimeter is 330 cm, find the lenghth of its sides.​

Answer 1

Answer:

Let the side=x

Let two side is 3 time less so=3(x-10)cm

So perimeter is given =330cm

So apply formula of =2(L+B)

2(3x-30)

6x=60

x=10

Step-by-step explanation:

Answer 2

Let the base be x

x+(3x-10)+(3x-10)=330cm

Open the brackets:-

x+3x-10+3x-10=330

Then add,

7x-20=330

Do transposition of -20,

7x=330+20

Add up,

7x=350

Do transposition of 7,

x=350/7

Divide,

x=50

Therefore the Answer is:–

Base(x)=50cm

Other two sides=3x-10

=3*50-10

=150-10

=140cm