The window is shown in the shape of a semi-circle with radius 4 ft. The distance from S to T is 2 ft and the measure of arc AB=45∘. Area of the glass in the region ABCD is

The window is shown in the shape of a semi-circle with radius 4 ft. Th

1.	The window is shown in the shape of a semi-circle with radius 4 ft. The distance from S to T is 2 ft and the measure of arc AB=45∘. Area of the glass in the region ABCD is
Answer» The window is shown in the shape of a semi-circle with radius $4$ ft. The distance from $S$ to $T$ is $2$ ft and the measure of arc $A B = 45^{\circ}$ . Area of the glass in the region $A B C D$ is