Question

sides of a triangle are in the ratio 12:19:25 and its perimeter is 560 cm. find its area​

Answer 1

Step-by-step explanation:

12x + 19x + 25x = 560cm

56x = 560cm

x = 560/56

= 10cm

so, 12x = 120cm

19x = 190cm

25x= 250cm

area = 1/2*b*h

= 1/2*120*250

Answer 2

Step-by-step explanation:

let the 1st side of the triangle=12x

so, the 2nd side of the triangle=19x

the 3rd side of the triangle=25x

perimeter of the triangle is sum of all sides

according to the question,

560=12x+19x+25x

560=56x

560/56=x

10=x

1st side of the triangle is 12*10=120cm

2nd side of the triangle is 19*10=190cm

3rd side of the triangle is 25*10=250cm

area of the triangle=1/2*b*h

=1/2*120*250

=15000cm