Find the area of a triangle whose side are in the ratio 5:12:13 andit perimeter is 60 cm
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let sides are 5x 12x 13x
as perimeter of tri is s+s+s
=5x+12x+13x
=30x
but perimeter is 60
therefore 30x=60
so the value of x is 20
now side 1 =5×20=100
side 2 is 12×20=240
side 3 is 13×20=260
now we have all sides of triangle
so we can find by using herons formula
as perimeter of tri is s+s+s
=5x+12x+13x
=30x
but perimeter is 60
therefore 30x=60
so the value of x is 20
now side 1 =5×20=100
side 2 is 12×20=240
side 3 is 13×20=260
now we have all sides of triangle
so we can find by using herons formula
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