Question

Two equal sides of a triangle are each 5 metres less than twice the third side. If the perimeter of triangle is 55 meters , find the lengths of its side
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Answer 1

Answer:

45 metres

Step-by-step explanation:

2 equal sides = 5 metres

Perimeter = sum of all sides

55 = 5 + 5 + third side

55 = 10 + third side

third side = 55 - 10

third side = 45 metres

Answer 2

Answer:

Step-by-step explanation:

its an isosceles Triangle

Lets take length of 3rd side as x

Equal sides= 2x-5

Perimeter of triangle=55m

∴2x-5+x=55

2x+x-5=55

3x-5=55

3x=55-5

x=50/3

x= 16.6⁻

3rd side =16.6⁻m

1st and 2nd sides=16.6⁻x2-5

33.2-5

28.2