Question

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

Answer 1

Answer:

let the length of base is x than the the length of congruent side is x +3

ATQ

(x+3)+(x + 3) + x = 30

3x + 6 = 30

3x = 30-6

3x = 24

x = 8

base = x= 8

congruent side =x +3=11

Answer 2

Answer:

11,11,8

Step-by-step explanation:

PERIMETER =A+B+C

GIVEN ,

A=B

A=B=C+3

C=A-3

PERIMETER =30

30=A+A+A-3=30

3A=33

A=11.

B=11.

C=11-3

C=8.