Question

Construct a triangle ABC whose perimeter is 12 and sides are ratio 3:4:5.

Answer 1

let the ratios be x

since, 3x+4x+5x=12
12x=12
x=1

all sides will be
3,4 and 5

Answer 2

first we find the sides

so, let the side of triangle = 3x,4x,5x

perimeter of triangle= 3 X + 4 x + 5 x
12=12x
12/12=X
1=X
then sides of triangle=3,4,5

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