Question

Two sides of a triangle are exactly the Same length. The length of the third side is four cm shorter than the two equal sides. Find the length of each side if the perimeter of the triangle is 41 cm​

Answer 1

15 cm, 15 cm, 11 cm

Explanation:

let the equal sides be x then the third side is x - 4

The perimeter is the sum of the 3 sides and is 41 cm , then

x + x + x - 4 = 41

3x - 4 = 41 ( add 4 to both sides )

3x = 45 ( divide both sides by 3 )

x = 15

x - 4 = 15 - 4 = 11

The sides are 15 cm, 15 cm, 11 cm