Question

21
90°
In the figure not drawn to scale, ABF and BEF are right-angled triangles.
Find ZBFE.
(A) 69
(B) 32°
(C) 33°
(D) 54°
CE
c0111
D​

Answer 1

Answer:

Given B = 90^∘,AB = 28cm,BC = 21cm Area of shaded region = ar ABC + area of semicircle AC - ar quarter circle BC = 12 × BC × AB + 12 × pi (AC2)^2 ...