Question

Please answer with explanation ​

Answer 1

Answer:

required answer is (A) $\frac{lb}{2}$ unit^2

Step-by-step explanation:

required shaded area = area of ΔAEB + area of ΔEDC

area of ΔAEB = ( 1/2 × base of ΔAEB × height of ΔAEB )

= 1/2 × AE × AB = 1/2×AE×l unit^2

area of ΔEDC = (1/2 × base of ΔEDC × height of ΔEDC)

= 1/2 × CD × DE

= 1/2 × l × DE unit^2

now required total shaded area = 1/2×AE×l + 1/2 × l × DE

= 1/2 × l ×(AE+DE)

= 1/2 × l × b [since AE+DE = b]

= $\frac{lb}{2}$ unit^2

Answer 2

Answer:

option a is the correct answer