Question

if side of a triangle are in the ratio 2 ratio 3 ratio 4 find the side of a triangle if perimeter of triangle is 45cm
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Answer 1

Let the sides of triangle be 2x, 3x and 4x.

Perimeter of triangle = 45 cm

2x+3x+4x=45

9x=45

x=5

First side= 2x= 2 × 5=10 cm

Second side= 3x= 3 × 5=15 cm

Third side = 4x= 4 × 5= 20cm

Answer 2

Let the side= x cm

Ratio

2:3:4

So 1 side = 2x cm

2nd side = 3x cm

3rd side = 4x cm

So A.T.Q

2x+3x+4x= 45 cm

9x= 45

x= 45/9

x= 5 cm

So 1 side = 2x = 2×5=10cm

2nd one= 3x = 3×5= 15 cm

3rd one= 4x = 4×5 = 20 cm

Verification

Add these sides

10+15+20= 45

45= 45

Hope it helps

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