Question

the unequal sides of an isosceles triangle is 3 cm more than its one of the equal sides if the perimeter of triangle is 18 cm if the length of the three sides​

Answer 1

we see that the length of the unequal side is three cm greater than the length of one of the equal sides.

means that 3x +3=18 . 3x here means all the three sides including the unequal side with being greater by 3cm. so 3x + 3=18. then 3x=18-3=15 so 3x =15 and x = 5 . length of the unequal side is 8 cm and length of the equal sides is 5 cm each.

Answer 2

Step-by-step explanation:

We know that,

In an isoceles ∆ two sides are always equal.

Let's assume the sides as x cm

Then, it is told that the unequal side is 3 more

So, x + 3

According to the question,

➩ 2x + (x + 3) = 18

➩ 3x + 3 = 18

➩ 3x = 18 - 3

➩ 3x = 15

➩ x = 15/3

➩ x = 5cm

Hence,

The equal sides are = x = 5cm.

The unequal side is (x + 3) = 8cm ans.