Question

class 9 maths question paper plzz answer it... I will be thankful to u...​

Answer 1

Answer:

12.8 cm

Step-by-step explanation:

Given:

AB = DC = 16 cm  {Opposite sides are equal in length}

AE = 8 cm

CF = 10 cm.

∴ Area of parallelogram = base * height

⇒ AB * AE = AD * CF

⇒ 16 * 8 = AD * 10

⇒ 128 = 10AD

⇒ 128/10 = AD

⇒ 12.8 = AD.

Therefore, AD = 12.8 cm.

Hope it helps!

Answer 2

AB=CD=16cm

area of parallelogram=b×h

area of ABCD=CD×AE=AD×CF

16×8=AD×10

128=AD×10

12.8=AD