ABCD is a quadrilateral such that \[\angle \mathbf{D}=\mathbf{9}{{\mathbf{0}}^{{}^\circ }}\]. A circle C(O, r) touches the sides AB, BC, CD and DA at P, Q R and S respectively. If \[\mathbf{BC}=\mathbf{38}\]cm. \[\mathbf{CD}=\mathbf{25}\]cm and \[\mathbf{BP}=\mathbf{27}\]cm then radius 'r, is equal to

ABCD is a quadrilateral such that \[\angle \mathbf{D}=\mathbf{9}{{\mat

1.	ABCD is a quadrilateral such that \[\angle \mathbf{D}=\mathbf{9}{{\mathbf{0}}^{{}^\circ }}\]. A circle C(O, r) touches the sides AB, BC, CD and DA at P, Q R and S respectively. If \[\mathbf{BC}=\mathbf{38}\]cm. \[\mathbf{CD}=\mathbf{25}\]cm and \[\mathbf{BP}=\mathbf{27}\]cm then radius 'r, is equal to
A.	14 cm
B.	11 cm
C.	12 cm
D.	10 cm
Answer» B. 11 cm

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