If each side of a triangle ABC is of length 4 cm and if AD is 1 cm and ED⊥AB . What is area of region BCED–
(A) 8√3 cm2
(B) 4√3 cm2
(C) 9√3/2 cm2
(D) 7√3/2 cm2
Correct option (D) 7√3/2 cm2
Explanation: