Respuesta :
Answer:
sides are 27 cm , 27 cm, 36 cm
Step-by-step explanation:
perimeter of triangle = 90 cm
let the unknown side be x
2x + x + 9 = 90 cm
3x = 81
x = 27 cm
two sides are 27 cm each.
and third side is 36 cm.
sides are 27 cm , 27 cm, 36 cm
Answer:
All three sides are 27 cm, 27 cm and 36 cm
Step-by-step explanation:
Let the sides of that triangle are x, x, y cm.
Now as per statement of the question two sides are equal and third side is 9 centimeters longer than the others.
So y = x + 9
Now perimeter of the triangle is 90 cm
so x + x + y = 90
Now we replace the value of y from the equation given above
x + x + ( x + 9) = 90
3x + 9 = 90
3x = 90 - 9
3x = 81
x = 27 cm
Therefore, all three sides of the triangle are 27 cm, 27 cm, 36 cm
