Question

Two equal sides of a triangle are each 5 metres less than twice the third side. If the
perimeter of the triangle is 55 metres, find the lengths of its sides.​

Answer 1

Answer:

13 cm, 21cm, 21cm

Step-by-step explanation:

let one of the side of the triangle be x

the equal each sides will 2x - 5

perimeter = 55 cm

x + 2x - 5 + 2x - 5 = 55

5x - 10 = 55

5x = 55 + 10 = 65

x = 65/5

x = 13

therefore the sides are

1st side

x = 13

2nd side

2x - 5 = 2(13) - 5 = 26 - 5 = 21

3rd side

2x - 5 = 2(13) - 5 = 26 - 5 = 21

hope you get your answer