The sides of a triangle are in the proportion of 4:5:6 and perimeter is 195cm . Find its area .
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let the sides be 4x,5x and 6x
4x+5x+6x=195
15x=195
x=195/15
x=11
4*11=44
5*11=55
6*11=66
4x+5x+6x=195
15x=195
x=195/15
x=11
4*11=44
5*11=55
6*11=66
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