Question

The perimeter is an isosceles triangle is 30 cm . The length of its congruent side is 3 cm more than its base . Find the length of all sides

Answer 1

Answer:

Length of the congruent sides is 11 cm

And length of the base is 8 cm

Step-by-step explanation:

Let the base be of x cm

So, it's side are of (x+3) cm

NOW,ACCORDING TO THE QUESTION,

x+x+3+x+3=30

3x+6=30

3x=30-6=24

3x=24

x=8

So, it's sides are 8 cm, (8+3) =11 cm,and 11 cm

Answer 2

Answer:

let the base of this triangle be 'b'

Step-by-step explanation:

length of congruent sides = b + 3

perimeter = 30cm

b + (b + 3) + (b + 3) = 30

3b = 24 => b = 8 cm

length of congruent sides

= b + 3 = 8 + 3 = 11cm

length of all sides are

8cm, 11cm and 11cm Answer .