Solve this:
Two circles with centres p and q are shown in the figure. The area of rectangle ABCD is 15 sq. cm.

Find the area of triangle QPT 
$a) \frac{12}{7}c{m}^2 b) 3.75 c{m}^2 c) 2.84 c{m}^2 d) \frac{16}{5}c{m}^2$ $a) \frac{12}{7}c{m}^2 b) 3.75c{m}^2 c) 2.84c{m}^2 d)\frac{16}{5}c{m}^2$