Question

ABCD is a trapezium with AB || CD. AB = 10.5 cm, CD = 15.5 cm and AM ICD. AM = 4.8 cm.
Find the area of the trapezium.
Two parallel sides ofa​

Answer 1

Step-by-step explanation:

Correct option is

A

1764

Draw CE∥DA and CF⊥AB.

Therefore, ADCE is a parallelogram having AE∥CD and CE∥DA.

⇒AD=CE=39cm,DC=AE=30cm and BE=75−30=45cm

In △BCE, by heron's formula we have

a=39cm,b=45cm and c=42cm

⇒s=2a+b+c=239+42+45=63cm

∴ Area of ΔBEC=s(s−a)(s−b)(s−c)

=63(63−39)(63−42)(63−45)cm2

=63×24×21×18cm2

=756cm2

Also, Area of ΔBEC=21×base×height

⇒21×45×h=

Answer 2

Answer:

62.4cm.sq

Step-by-step explanation: