helppp plsss In the figure, are SBT is one quarter of a circle with center R and radius 6. If the length plus the width of the rectangle ABCR is 8, then the perimeter of the shaded region is
(A) 8 + 3π
(B) 10 + 3π
(C) 14 + 3π
(D) 1 + 6π
(E) 12 + 6π