Question

the length of side ad of parallelogram abcd where dc=18 cm and ab = 3x explain please ​

Answer 1

Answer:

in parallelogram ABCD,

AB=DC(in parallelogram opposite sides are equal)

3x=18

x=6cm

BC=AD=x=6cm

Answer 2

8th

Maths

Understanding Quadrilaterals

Parallelogram

In parallelogram ABCD , AB ...

MATHS

In parallelogram ABCD, AB=(3x−4) cm, BC=(y−1) cm, CD=(y+5) cm and AD=(2x+5) cm, find the ratio AB:BC.

Answer: 41:35

Mention answer as 1 if true else mention 0 if false

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ANSWER

Given, Parallelogram ABCD with AB =(3x−4), BC =(y−1), CD =(y+5), AD =(2x+5)

In a parallelogram, opposite sides are equal,

Therefore, AB = CD, BC = AD.

For AB=CD,

3x−4=y+5,

3x−y=4+5

3x−y=9 ......(1)

For BC=AD,

Therefore, y−1=2x+5

⇒y−2x=6

⇒2x−y=−6 .....(2)

From (1) and (2), we have

3x−y=9

⇒2x−y=−6

Solving for x and y, we get

x=15

⇒y=36

Now, AB =3x−4=41

BC =y−1=35

Ratio of AB:BC =41:35.