Question

The sides of a triangle are in the ratio 1:2:3 . if the perimeter is 42cm find its side

Answer 1

Answer:

Let the sides be x , 2x , 3x.

Perimeter = All sides of triangle

42 = x+2x+3x

42 = 6x

x = 42 ÷ 6 = 7

Sides are. 7cm

14 cm

21 cm

Answer 2

Step-by-step explanation:

1:2:3

let common multiple be X

side 1 will be 1x

side 2 will be 2x

side 3will be 3x

perimeter =1x +2x +3x

42 =6x

42/6=X

7=X

length of side when will be x is equal to 7

length of side second will be 2x is equal to 2 into 7 i.e 14

third side will be 3x 3into 7 = 21

therefore the sides will be 7 14 and 21

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