Question

in the adjoining figure, ABCD is a rectangle of size 18cm by 10cm . In ∆BEC, angle E =90° and EC= 8cm. find the area of the shaded region.
*NAME THE BOOK IN WHICH THIS QUESTION IS*​

Answer 1

In △BCE

⇒EB

2

+EC

2

=BC

2

⇒EB

2

=BC

2

−EC

2

⇒EB=

100−64

=

36

=6cm

Area of the △EBC=

2

1

×EB×EC

=

2

1

×6cm×8cm=24cm

2

Area of rectangle ABCD=18cm×10cm=180cm

2

Area(shaded region) =ar(rectangle)−ar(△BCE)

180cm

2

−24cm

2

=156cm

2

Answer 2

Answer:

math mate is correct answer dear mate