Question

two sides of a parallelogram are in the ratio 3:4 if its perimeter is 42 cm find the lengths of its sides​

Answer 1

Answer:

9,12

Step-by-step explanation:

Let sides be 3x and 4x

as we know that sum of all sides is 42cm

so, ATQ

2(3x+4x)= 42 cm

2(7x) = 42 cm

14x= 42 cm

x= 42cm/14

x=3cm

Sides will be 3*3 ,4*3 cm

9,12

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Answer 2

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Step-by-step explanation:

lets take the sides as =3x and 4x

perimeter = 2×( side 1 + side 2)

so,42= 2×(3x +4x)

42=2(7x)

42÷2=7x

21=7x

21÷7=x

3=x

therefore the length of the sides are

3x= 3×3=9cm

4x=4×3=12cm