Question

plzzz answer this question​

Answer 1

Answer:

we know that sum of all side of the triangle =180°

let the lenght of the triangle be "x"

=6x+5x+4x=180°

=15x=180°

=x=180/15

=x=12

Therefore ,

6×12=72

5×12=60

4×12=48

therfore the length will be 72cm,60cm,48cm.

Answer 2

Answer:

perimeter of a triangle ABC is 37cm.

Let the sides be x cm,y cm and Z cm. Also, let the lengths of altitudes be 6a cm,5a cm and4a cm.

Area=

1/2*6a*x=1/2*y*5a1/2∗6a∗x=1/2∗y∗5a

6x=5y6x=5y

like wise

1/2*z*4a=1/2*y*5a1/2∗z∗4a=1/2∗y∗5a

4z=5y4z=5y

So, 6x=5y=4z

As perimeter of a triangle ABC is 37cm.

x+y+z=37x+y+z=37

5/6x+y+5/4z=375/6x+y+5/4z=37

10y+12y+15y=37*1210y+12y+15y=37∗12

37y=37*1237y=37∗12

Y=12Y=12

x=12*5/6=10x=12∗5/6=10

z=12*5/4=15z=12∗5/4=15

lengths of its sides x is 10cm,y is 12cm and z is 15cm.