Question

the ratio of two sides of parallelogram is 3:4 if its perimeter is 154 cm find length of all sides ( pqr)​

Answer 1

Answer:

Let them in the form of x = 3 x : 4 x

Now , Perimeter = 70 cm

2(l+b) = 70 cm

2(3x+4x) = 70 cm

2(7x) = 70 cm

7x = 70/2

7 x = 35 cm

x = 5 cm

Now ,

3 x = 3× 5 cm = 15 cm

4 x = 4× 5 cm = 20 cm

hope it helps....

Answer 2

here

let sides be 3x and 4×

therefore

3x + 4x + 3x +4x = 154

14x = 154

x = 11

therefore sides are

3x = 3 × 11 = 33 cm

4x = 4× 11 = 44cm

or use formula

2(l+ b ) = perimeter