Question

please help me to solve this question.​

Answer 1

Answer:

12cm²

Step-by-step explanation:

Let us find area of unshaded region.

Also, let the point joining pt. E with line AD be 'X'. In ∆EDX,

DX=3cm-1cm = 2cm.

Now, since ABCD is a rectangle, angle D = 90°.

So, ar(∆DXE) = 1/2 x 3 x 2 = 3cm².

Similarly, in ∆ ECB,

ar(∆ECB) = 1/2 x 3 x 4 = 6cm²

So, area of shaded region

= Rectangle - unshaded region

= 3 x 7 cm² - (6cm² + 3cm²)

= 21 - 9 cm²

= 12 cm²

Answer 2

Answer:

12 sq.cm

Step-by-step explanation:

I hope you get the answer!!!