Question

the sides of a triangle is in the ratio 2:3:4 and its perimeter is 63 cm. what is the area of a triangle?

Answer 1

let the sides of the triangle be 2x,3x,4x
=>2x+3x+4x=63
=>9x=63
=>x=63/9=7
sides of triangle =2x=2*7=14
3*7=21
4*7=28

area of triangle =
$semi \: perimeter \ = \frac{a + b + c}{2}$
area = √s(s-a)+(s-b)+(s-c)
I'm sorry i did not calculate the are cause I'm in a hurry but you can calculate the area this way