Question

please answer this one... answer is 12cm I Want Solution... Plzzzz
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Answer 1

Answer:

ok,

sol:

Let the side of isosceles triangle be x

Therefore sum of congruent sides = 2x

perimeter = 40cm

Base of isosceles = 2/3 × sum of congruent side

B = 2/3 × 2x

B = 4x/3

Now, perimeter of isosceles = Sum of congruent sides + Base

40 = 2x + 4x/ 3

40 = (6x + 4x) / 3

40 = 10x/ 3

40 × 3 = 10x

120 = 10x

x = 120 / 10

x = 12

The length of each equal side is 12.

solved by my own Logical proof.

By

Amannn's Charlie