find the side of the triangle are in the ratio 2 is to 3 is to 5 if the perimeter is 40 cm find the area of triangle
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Step-by-step explanation:
let the side of the triangle be 2x,3x and 5x
2x+3x+5x=40
10x=40
x=4cm
a=2*4=8cm
b=3*4=12cm
c=5*4=20cm
area=a+b+c/2
=8+12+20/2
=40/2
=20
area=√s(s-a)(s-b)(s-c)
=√20(20-8)(20-12)(20-20)
=√20*12*8*0
=√0
=0cm^2
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