Let A be the centre of the circle \( x^2 + y^2 - 2x - 4y - 20 = 0 \), and B(1, 7) and D(4, -2) are points on the circle then, if tangents are drawn at B and D, which meet at C, then area of quadrilateral ABCD is
Show Hint
For cyclic quadrilaterals, use the known formula involving the vertices to find the area.
Step 1: Use the formula for the area of quadrilateral.
The area of the quadrilateral can be calculated using the formula for a cyclic quadrilateral given its vertices.
Step 2: Conclusion.
Thus, the area of quadrilateral ABCD is 75.
Final Answer:
\[
\boxed{75}
\]