Question

the perimeter of triangle is 30 cm. Its sides are in ratio 1:2:3, then find its area

Answer 1

let sides be x ,2x,3x

perimeter = x+2x+3x

30 = 6x

x= 5

THEREFORE sides are 5,10,15

area = use herons formula

semi perimeter = 15

area = root [( 15 _5) (15_10)(15_15)

= root 0 ....=0

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