Verified answer

Answer:

Hence, The final answer is 15 cm

Step-by-step explanation:

Given :

• Area = 135 sq. cm
• d1 = 18 cm
• d2 = ?

Now, d1 and d2 are the diagonal in ABCD. Where d1 is the 18 cm and d2 is the new length of the diagonal.

We know that the formula of kite are :

• A = 1/2(d1 × d2)

Finding the new length of diagonal,

• A = 1/2(d1 × d2)
• 135 = 1/2(18cm × d2)
• 270 = 18cm × d2
• d2 = 270/18cm
• d2 = 15

Therefore, the new area is 15 cm