Question

If the perimeter of a triangular field is 144m and ratio of the sides is3:4:5,find the area of the field

Answer 1

3x+5x+4x=144m
12x=144
x=12
3x=36
4x=48
5x=60
area =
$\sqrt{72 \times 36 \times 22 \times 10}$

Answer 2

Answer:

864m^2

Step-by-step explanation:

PERIMETER =144m

3x+4x+5x=144

12x=144

x=12

3x=36,4x=48,5x=60

by herons formula

s=36+48+60/2=72

Therefore

$\sqrt{72(72 - 36)(72 - 48)(72 - 60}$

root of 72×36×24×12

=root of 746496

=864