Question

the ratio of the sides of a parallelogram is 3:4. If the perimetre is 84cm, find the sides of the parallelogram


who will answer he will be very good for me​

Answer 1

Step-by-step explanation:

If the two sides have a ratio of 3:4 that means their sides can be represented as 3x and 4x.

⇒ Perimeter of parallelogram =2(3x)+2(4x)

⇒ 84=6x+8x

⇒ 84=14x

⇒ x=6cm

The length of the sides are,

⇒ 3x=3×6cm=18cm

⇒ 4x=4×6cm=24cm

∴ The length are18,24 cm

Answer 2

Step-by-step explanation:

Consider ABCD be a parallelogram which has,

Perimeter = 84cm

Let 1st side = 3x

2nd side = 4x

We need to find the sides of the parallelogram

We know ,opposite sides of a parallelogram are equal .

Therefore,consider 3rd side & 4th side be 3x & 4x respectively.

also, Sum of all sides = Perimeter of parallelogram

=> 3x + 4x + 3x + 4x = 84cm

14x = 84

x = 6

Thus,all sides of parallelogram are 18cm,24cm,18cm & 24cm.